<?php if($board->isWriter()):?>
<!-- 버튼 시작 -->
<div class="kboard-thumbnail-poweredby">
     <div class="kboard-control">
         <div style="float:left"><a href="http://www.cosmosfarm.com/products/kboard" onclick="window.open(this.href);return false;" title="<?php echo __('KBoard is the best community software available for WordPress', 'kboard')?>">Powered by KBoard</a></div>
         <div style="float:right"><a href="<?php echo $url->set('mod', 'editor')->toString()?>" class="kboard-thumbnail-button-small"><?php echo __('New', 'kboard')?></a></div>
     </div>
< /div>
<!-- 버튼 끝 -->
<?php endif?>

아래처럼 변경해보시겠어요?

<!-- 버튼 시작 -->
<div class="kboard-thumbnail-poweredby">
     <div class="kboard-control">
         <div style="float:left"><a href="http://www.cosmosfarm.com/products/kboard" onclick="window.open(this.href);return false;" title="<?php echo __('KBoard is the best community software available for WordPress', 'kboard')?>">Powered by KBoard</a></div>
         <?php if($board->isWriter()):?>
         <div style="float:right"><a href="<?php echo $url->set('mod', 'editor')->toString()?>" class="kboard-thumbnail-button-small"><?php echo __('New', 'kboard')?></a></div>
         <?php endif?>
     </div>
< /div>
<!-- 버튼 끝 -->

만약 굵게 표시된 코드를 지우면 모두에게 표시됩니다.

고맙습니다~^^

위의 코드를 변경해서 올려드렸습니다.

아래는 list.php 파일의 내용입니다

<div id="kboard-thumbnail-list">
 
 <!-- 게시판 정보 시작 -->
 <div class="kboard-list-header">
  <?php if(!$board->isPrivate()):?>
   <div class="kboard-total-count">
    <?php echo __('Total', 'kboard')?> <?php echo number_format($board->getListTotal())?>
   </div>
  <?php endif?>
  
  <div class="kboard-sort">
   <form id="kboard-sort-form-<?php echo $board->id?>" method="get" action="<?php echo $url->toString()?>">
    <?php echo $url->set('pageid', '1')->set('category1', '')->set('category2', '')->set('target', '')->set('keyword', '')->set('mod', 'list')->set('kboard_list_sort_remember', $board->id)->toInput()?>
    
    <select name="kboard_list_sort" onchange="jQuery('#kboard-sort-form-<?php echo $board->id?>').submit();">
     <option value="newest"<?php if($list->getSorting() == 'newest'):?> selected<?php endif?>><?php echo __('Newest', 'kboard')?></option>
     <option value="best"<?php if($list->getSorting() == 'best'):?> selected<?php endif?>><?php echo __('Best', 'kboard')?></option>
     <option value="viewed"<?php if($list->getSorting() == 'viewed'):?> selected<?php endif?>><?php echo __('Viewed', 'kboard')?></option>
     <option value="updated"<?php if($list->getSorting() == 'updated'):?> selected<?php endif?>><?php echo __('Updated', 'kboard')?></option>
    </select>
   </form>
  </div>
 </div>
 <!-- 게시판 정보 끝 -->
 
 <?php if($board->use_category == 'yes'):?>
 <!-- 카테고리 시작 -->
 <div class="kboard-category category-mobile">
  <form id="kboard-category-form-<?php echo $board->id?>" method="get" action="<?php echo $url->toString()?>">
   <?php echo $url->set('pageid', '1')->set('category1', '')->set('category2', '')->set('target', '')->set('keyword', '')->set('mod', 'list')->toInput()?>
   
   <?php if($board->initCategory1()):?>
    <select name="category1" onchange="jQuery('#kboard-category-form-<?php echo $board->id?>').submit();">
     <option value=""><?php echo __('All', 'kboard')?></option>
     <?php while($board->hasNextCategory()):?>
     <option value="<?php echo $board->currentCategory()?>"<?php if(kboard_category1() == $board->currentCategory()):?> selected<?php endif?>><?php echo $board->currentCategory()?></option>
     <?php endwhile?>
    </select>
   <?php endif?>
   
   <?php if($board->initCategory2()):?>
    <select name="category2" onchange="jQuery('#kboard-category-form-<?php echo $board->id?>').submit();">
     <option value=""><?php echo __('All', 'kboard')?></option>
     <?php while($board->hasNextCategory()):?>
     <option value="<?php echo $board->currentCategory()?>"<?php if(kboard_category2() == $board->currentCategory()):?> selected<?php endif?>><?php echo $board->currentCategory()?></option>
     <?php endwhile?>
    </select>
   <?php endif?>
  </form>
 </div>
 
 <div class="kboard-category category-pc">
  <?php if($board->initCategory1()):?>
   <ul class="kboard-category-list">
    <li<?php if(!kboard_category1()):?> class="kboard-category-selected"<?php endif?>><a href="<?php echo $url->set('category1', '')->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->tostring()?>"><?php echo __('All', 'kboard')?></a></li>
    <?php while($board->hasNextCategory()):?>
    <li<?php if(kboard_category1() == $board->currentCategory()):?> class="kboard-category-selected"<?php endif?>>
     <a href="<?php echo $url->set('category1', $board->currentCategory())->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->toString()?>"><?php echo $board->currentCategory()?></a>
    </li>
    <?php endwhile?>
   </ul>
  <?php endif?>
  
  <?php if($board->initCategory2()):?>
   <ul class="kboard-category-list">
    <li<?php if(!kboard_category2()):?> class="kboard-category-selected"<?php endif?>><a href="<?php echo $url->set('category2', '')->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->tostring()?>"><?php echo __('All', 'kboard')?></a></li>
    <?php while($board->hasNextCategory()):?>
    <li<?php if(kboard_category2() == $board->currentCategory()):?> class="kboard-category-selected"<?php endif?>>
     <a href="<?php echo $url->set('category2', $board->currentCategory())->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->toString()?>"><?php echo $board->currentCategory()?></a>
    </li>
    <?php endwhile?>
   </ul>
  <?php endif?>
 </div>
 <!-- 카테고리 끝 -->
 <?php endif?>
 
 <!-- 리스트 시작 -->
 <div class="kboard-list">
  <table>
   <thead>
    <tr>
     <td class="kboard-list-uid"><?php echo __('Number', 'kboard')?></td>
     <td class="kboard-list-thumbnail"><?php echo __('Thumbnail', 'kboard')?></td>
     <td class="kboard-list-title"><?php echo __('Title', 'kboard')?></td>
     <td class="kboard-list-user"><?php echo __('Author', 'kboard')?></td>
     <td class="kboard-list-date"><?php echo __('Date', 'kboard')?></td>
     <td class="kboard-list-vote"><?php echo __('Votes', 'kboard')?></td>
     <td class="kboard-list-view"><?php echo __('Views', 'kboard')?></td>
    </tr>
   </thead>
   <tbody>
    <?php while($content = $list->hasNextNotice()):?>
    <tr class="kboard-list-notice<?php if($content->uid == kboard_uid()):?> kboard-list-selected<?php endif?>">
     <td class="kboard-list-uid"><?php echo __('Notice', 'kboard')?></td>
     <td class="kboard-list-thumbnail">
      <a href="<?php echo $url->set('uid', $content->uid)->set('mod', 'document')->toString()?>">
      <?php if($content->getThumbnail(120, 90)):?><img src="<?php echo $content->getThumbnail(120, 90)?>" alt=""><?php else:?><i class="icon-picture"></i><?php endif?>
      </a>
     </td>
     <td class="kboard-list-title">
      <a href="<?php echo $url->set('uid', $content->uid)->set('mod', 'document')->toString()?>">
       <div class="kboard-thumbnail-cut-strings">
        <?php if($content->getThumbnail(96, 70)):?>
        <div class="kboard-mobile-contents">
         <img src="<?php echo $content->getThumbnail(96, 70)?>" alt="" class="contents-thumbnail">
        </div>
        <?php endif?>
        <?php if($content->isNew()):?><span class="kboard-thumbnail-new-notify">New</span><?php endif?>
        <?php if($content->secret):?><img src="<?php echo $skin_path?>/images/icon-lock.png" alt="<?php echo __('Secret', 'kboard')?>"><?php endif?>
        <?php if($content->category1):?>[<?php echo $content->category1?>]<?php endif?>
                <?php if($content->category2):?>[<?php echo $content->category2?>]<?php endif?>
        <?php echo $content->title?>
        <span class="kboard-comments-count"><?php echo $content->getCommentsCount()?></span>
       </div>
      </a>
      <div class="kboard-mobile-contents">
       <span class="contents-item"><?php echo apply_filters('kboard_user_display', $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, $content->member_uid, $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, 'kboard', $boardBuilder)?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo $content->getDate()?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo __('Votes', 'kboard')?> <?php echo $content->vote?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo __('Views', 'kboard')?> <?php echo $content->view?></span>
      </div>
     </td>
     <td class="kboard-list-user"><?php echo apply_filters('kboard_user_display', $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, $content->member_uid, $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, 'kboard', $boardBuilder)?></td>
     <td class="kboard-list-date"><?php echo $content->getDate()?></td>
     <td class="kboard-list-vote"><?php echo $content->vote?></td>
     <td class="kboard-list-view"><?php echo $content->view?></td>
    </tr>
    <?php endwhile?>
    <?php while($content = $list->hasNext()):?>
    <tr class="<?php if($content->uid == kboard_uid()):?>kboard-list-selected<?php endif?>">
     <td class="kboard-list-uid"><?php echo $list->index()?></td>
     <td class="kboard-list-thumbnail">
      <a href="<?php echo $url->set('uid', $content->uid)->set('mod', 'document')->toString()?>">
      <?php if($content->getThumbnail(120, 90)):?><img src="<?php echo $content->getThumbnail(120, 90)?>" alt=""><?php else:?><i class="icon-picture"></i><?php endif?>
      </a>
     </td>
     <td class="kboard-list-title">
      <a href="<?php echo $url->set('uid', $content->uid)->set('mod', 'document')->toString()?>">
       <div class="kboard-thumbnail-cut-strings">
        <?php if($content->getThumbnail(96, 70)):?>
        <div class="kboard-mobile-contents">
         <img src="<?php echo $content->getThumbnail(96, 70)?>" alt="" class="contents-thumbnail">
        </div>
        <?php endif?>
        <?php if($content->isNew()):?><span class="kboard-thumbnail-new-notify">New</span><?php endif?>
        <?php if($content->secret):?><img src="<?php echo $skin_path?>/images/icon-lock.png" alt="<?php echo __('Secret', 'kboard')?>"><?php endif?>
        <?php if($content->category1):?>[<?php echo $content->category1?>]<?php endif?>
                <?php if($content->category2):?>[<?php echo $content->category2?>]<?php endif?>
        <?php echo $content->title?>
        <span class="kboard-comments-count"><?php echo $content->getCommentsCount()?></span>
       </div>
      </a>
      <div class="kboard-mobile-contents">
       <span class="contents-item"><?php echo apply_filters('kboard_user_display', $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, $content->member_uid, $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, 'kboard', $boardBuilder)?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo $content->getDate()?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo __('Votes', 'kboard')?> <?php echo $content->vote?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo __('Views', 'kboard')?> <?php echo $content->view?></span>
      </div>
     </td>
     <td class="kboard-list-user"><?php echo apply_filters('kboard_user_display', $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, $content->member_uid, $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, 'kboard', $boardBuilder)?></td>
     <td class="kboard-list-date"><?php echo $content->getDate()?></td>
     <td class="kboard-list-vote"><?php echo $content->vote?></td>
     <td class="kboard-list-view"><?php echo $content->view?></td>
    </tr>
    <?php $boardBuilder->builderReply($content->uid)?>
    <?php endwhile?>
   </tbody>
  </table>
 </div>
 <!-- 리스트 끝 -->
 
 <!-- 페이징 시작 -->
 <div class="kboard-pagination">
  <ul class="kboard-pagination-pages">
   <?php echo kboard_pagination($list->page, $list->total, $list->rpp)?>
  </ul>
 </div>
 <!-- 페이징 끝 -->
 
 <!-- 검색폼 시작 -->
 <div class="kboard-search">
  <form id="kboard-search-form-<?php echo $board->id?>" method="get" action="<?php echo $url->toString()?>">
   <?php echo $url->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->toInput()?>
   
   <select name="target">
    <option value=""><?php echo __('All', 'kboard')?></option>
    <option value="title"<?php if(kboard_target() == 'title'):?> selected="selected"<?php endif?>><?php echo __('Title', 'kboard')?></option>
    <option value="content"<?php if(kboard_target() == 'content'):?> selected="selected"<?php endif?>><?php echo __('Content', 'kboard')?></option>
    <option value="member_display"<?php if(kboard_target() == 'member_display'):?> selected="selected"<?php endif?>><?php echo __('Author', 'kboard')?></option>
   </select>
   <input type="text" name="keyword" value="<?php echo kboard_keyword()?>">
   <button type="submit" class="kboard-thumbnail-button-small"><?php echo __('Search', 'kboard')?></button>
  </form>
 </div>
 <!-- 검색폼 끝 -->
 
 <?php if($board->isWriter()):?>
 <!-- 버튼 시작 -->
 <div class="kboard-thumbnail-poweredby">
     <div class="kboard-control">
         <div style="float:left"><a href="http://www.cosmosfarm.com/products/kboard" onclick="window.open(this.href);return false;" title="<?php echo __('KBoard is the best community software available for WordPress', 'kboard')?>">Powered by KBoard</a></div>
         <div style="float:right"><a href="<?php echo $url->set('mod', 'editor')->toString()?>" class="kboard-thumbnail-button-small"><?php echo __('New', 'kboard')?></a></div>
     </div>
</div>
 <!-- 버튼 끝 -->
 <?php endif?>
</div>

저의 실수로 다른 파일을 말씀드렸습니다.

editor.php 파일이 아니라 list.php 파일의 전체 코드를 봐야 답변을 드릴 수 있겠습니다.

번거로우시겠지만 다시 한번 부탁드립니다.

list.php 파일의 내용을 알려주시겠어요?

list.php의 전체 코드입니다.

<div id="kboard-thumbnail-list">
 
 <!-- 게시판 정보 시작 -->
 <div class="kboard-list-header">
  <?php if(!$board->isPrivate()):?>
   <div class="kboard-total-count">
    <?php echo __('Total', 'kboard')?> <?php echo number_format($board->getListTotal())?>
   </div>
  <?php endif?>
  
  <div class="kboard-sort">
   <form id="kboard-sort-form-<?php echo $board->id?>" method="get" action="<?php echo $url->toString()?>">
    <?php echo $url->set('pageid', '1')->set('category1', '')->set('category2', '')->set('target', '')->set('keyword', '')->set('mod', 'list')->set('kboard_list_sort_remember', $board->id)->toInput()?>
    
    <select name="kboard_list_sort" onchange="jQuery('#kboard-sort-form-<?php echo $board->id?>').submit();">
     <option value="newest"<?php if($list->getSorting() == 'newest'):?> selected<?php endif?>><?php echo __('Newest', 'kboard')?></option>
     <option value="best"<?php if($list->getSorting() == 'best'):?> selected<?php endif?>><?php echo __('Best', 'kboard')?></option>
     <option value="viewed"<?php if($list->getSorting() == 'viewed'):?> selected<?php endif?>><?php echo __('Viewed', 'kboard')?></option>
     <option value="updated"<?php if($list->getSorting() == 'updated'):?> selected<?php endif?>><?php echo __('Updated', 'kboard')?></option>
    </select>
   </form>
  </div>
 </div>
 <!-- 게시판 정보 끝 -->
 
 <?php if($board->use_category == 'yes'):?>
 <!-- 카테고리 시작 -->
 <div class="kboard-category category-mobile">
  <form id="kboard-category-form-<?php echo $board->id?>" method="get" action="<?php echo $url->toString()?>">
   <?php echo $url->set('pageid', '1')->set('category1', '')->set('category2', '')->set('target', '')->set('keyword', '')->set('mod', 'list')->toInput()?>
   
   <?php if($board->initCategory1()):?>
    <select name="category1" onchange="jQuery('#kboard-category-form-<?php echo $board->id?>').submit();">
     <option value=""><?php echo __('All', 'kboard')?></option>
     <?php while($board->hasNextCategory()):?>
     <option value="<?php echo $board->currentCategory()?>"<?php if(kboard_category1() == $board->currentCategory()):?> selected<?php endif?>><?php echo $board->currentCategory()?></option>
     <?php endwhile?>
    </select>
   <?php endif?>
   
   <?php if($board->initCategory2()):?>
    <select name="category2" onchange="jQuery('#kboard-category-form-<?php echo $board->id?>').submit();">
     <option value=""><?php echo __('All', 'kboard')?></option>
     <?php while($board->hasNextCategory()):?>
     <option value="<?php echo $board->currentCategory()?>"<?php if(kboard_category2() == $board->currentCategory()):?> selected<?php endif?>><?php echo $board->currentCategory()?></option>
     <?php endwhile?>
    </select>
   <?php endif?>
  </form>
 </div>
 
 <div class="kboard-category category-pc">
  <?php if($board->initCategory1()):?>
   <ul class="kboard-category-list">
    <li<?php if(!kboard_category1()):?> class="kboard-category-selected"<?php endif?>><a href="<?php echo $url->set('category1', '')->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->tostring()?>"><?php echo __('All', 'kboard')?></a></li>
    <?php while($board->hasNextCategory()):?>
    <li<?php if(kboard_category1() == $board->currentCategory()):?> class="kboard-category-selected"<?php endif?>>
     <a href="<?php echo $url->set('category1', $board->currentCategory())->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->toString()?>"><?php echo $board->currentCategory()?></a>
    </li>
    <?php endwhile?>
   </ul>
  <?php endif?>
  
  <?php if($board->initCategory2()):?>
   <ul class="kboard-category-list">
    <li<?php if(!kboard_category2()):?> class="kboard-category-selected"<?php endif?>><a href="<?php echo $url->set('category2', '')->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->tostring()?>"><?php echo __('All', 'kboard')?></a></li>
    <?php while($board->hasNextCategory()):?>
    <li<?php if(kboard_category2() == $board->currentCategory()):?> class="kboard-category-selected"<?php endif?>>
     <a href="<?php echo $url->set('category2', $board->currentCategory())->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->toString()?>"><?php echo $board->currentCategory()?></a>
    </li>
    <?php endwhile?>
   </ul>
  <?php endif?>
 </div>
 <!-- 카테고리 끝 -->
 <?php endif?>
 
 <!-- 리스트 시작 -->
 <div class="kboard-list">
  <table>
   <thead>
    <tr>
     <td class="kboard-list-uid"><?php echo __('Number', 'kboard')?></td>
     <td class="kboard-list-thumbnail"><?php echo __('Thumbnail', 'kboard')?></td>
     <td class="kboard-list-title"><?php echo __('Title', 'kboard')?></td>
     <td class="kboard-list-user"><?php echo __('Author', 'kboard')?></td>
     <td class="kboard-list-date"><?php echo __('Date', 'kboard')?></td>
     <td class="kboard-list-vote"><?php echo __('Votes', 'kboard')?></td>
     <td class="kboard-list-view"><?php echo __('Views', 'kboard')?></td>
    </tr>
   </thead>
   <tbody>
    <?php while($content = $list->hasNextNotice()):?>
    <tr class="kboard-list-notice<?php if($content->uid == kboard_uid()):?> kboard-list-selected<?php endif?>">
     <td class="kboard-list-uid"><?php echo __('Notice', 'kboard')?></td>
     <td class="kboard-list-thumbnail">
      <a href="<?php echo $url->set('uid', $content->uid)->set('mod', 'document')->toString()?>">
      <?php if($content->getThumbnail(120, 90)):?><img src="<?php echo $content->getThumbnail(120, 90)?>" alt=""><?php else:?><i class="icon-picture"></i><?php endif?>
      </a>
     </td>
     <td class="kboard-list-title">
      <a href="<?php echo $url->set('uid', $content->uid)->set('mod', 'document')->toString()?>">
       <div class="kboard-thumbnail-cut-strings">
        <?php if($content->getThumbnail(96, 70)):?>
        <div class="kboard-mobile-contents">
         <img src="<?php echo $content->getThumbnail(96, 70)?>" alt="" class="contents-thumbnail">
        </div>
        <?php endif?>
        <?php if($content->isNew()):?><span class="kboard-thumbnail-new-notify">New</span><?php endif?>
        <?php if($content->secret):?><img src="<?php echo $skin_path?>/images/icon-lock.png" alt="<?php echo __('Secret', 'kboard')?>"><?php endif?>
        <?php if($content->category1):?>[<?php echo $content->category1?>]<?php endif?>
                <?php if($content->category2):?>[<?php echo $content->category2?>]<?php endif?>
        <?php echo $content->title?>
        <span class="kboard-comments-count"><?php echo $content->getCommentsCount()?></span>
       </div>
      </a>
      <div class="kboard-mobile-contents">
       <span class="contents-item"><?php echo apply_filters('kboard_user_display', $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, $content->member_uid, $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, 'kboard', $boardBuilder)?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo $content->getDate()?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo __('Votes', 'kboard')?> <?php echo $content->vote?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo __('Views', 'kboard')?> <?php echo $content->view?></span>
      </div>
     </td>
     <td class="kboard-list-user"><?php echo apply_filters('kboard_user_display', $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, $content->member_uid, $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, 'kboard', $boardBuilder)?></td>
     <td class="kboard-list-date"><?php echo $content->getDate()?></td>
     <td class="kboard-list-vote"><?php echo $content->vote?></td>
     <td class="kboard-list-view"><?php echo $content->view?></td>
    </tr>
    <?php endwhile?>
    <?php while($content = $list->hasNext()):?>
    <tr class="<?php if($content->uid == kboard_uid()):?>kboard-list-selected<?php endif?>">
     <td class="kboard-list-uid"><?php echo $list->index()?></td>
     <td class="kboard-list-thumbnail">
      <a href="<?php echo $url->set('uid', $content->uid)->set('mod', 'document')->toString()?>">
      <?php if($content->getThumbnail(120, 90)):?><img src="<?php echo $content->getThumbnail(120, 90)?>" alt=""><?php else:?><i class="icon-picture"></i><?php endif?>
      </a>
     </td>
     <td class="kboard-list-title">
      <a href="<?php echo $url->set('uid', $content->uid)->set('mod', 'document')->toString()?>">
       <div class="kboard-thumbnail-cut-strings">
        <?php if($content->getThumbnail(96, 70)):?>
        <div class="kboard-mobile-contents">
         <img src="<?php echo $content->getThumbnail(96, 70)?>" alt="" class="contents-thumbnail">
        </div>
        <?php endif?>
        <?php if($content->isNew()):?><span class="kboard-thumbnail-new-notify">New</span><?php endif?>
        <?php if($content->secret):?><img src="<?php echo $skin_path?>/images/icon-lock.png" alt="<?php echo __('Secret', 'kboard')?>"><?php endif?>
        <?php if($content->category1):?>[<?php echo $content->category1?>]<?php endif?>
                <?php if($content->category2):?>[<?php echo $content->category2?>]<?php endif?>
        <?php echo $content->title?>
        <span class="kboard-comments-count"><?php echo $content->getCommentsCount()?></span>
       </div>
      </a>
      <div class="kboard-mobile-contents">
       <span class="contents-item"><?php echo apply_filters('kboard_user_display', $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, $content->member_uid, $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, 'kboard', $boardBuilder)?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo $content->getDate()?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo __('Votes', 'kboard')?> <?php echo $content->vote?></span>
       <span class="contents-separator">|</span>
       <span class="contents-item"><?php echo __('Views', 'kboard')?> <?php echo $content->view?></span>
      </div>
     </td>
     <td class="kboard-list-user"><?php echo apply_filters('kboard_user_display', $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, $content->member_uid, $content->member_uid?bp_core_get_userlink($content->member_uid):$content->member_display, 'kboard', $boardBuilder)?></td>
     <td class="kboard-list-date"><?php echo $content->getDate()?></td>
     <td class="kboard-list-vote"><?php echo $content->vote?></td>
     <td class="kboard-list-view"><?php echo $content->view?></td>
    </tr>
    <?php $boardBuilder->builderReply($content->uid)?>
    <?php endwhile?>
   </tbody>
  </table>
 </div>
 <!-- 리스트 끝 -->
 
 <!-- 페이징 시작 -->
 <div class="kboard-pagination">
  <ul class="kboard-pagination-pages">
   <?php echo kboard_pagination($list->page, $list->total, $list->rpp)?>
  </ul>
 </div>
 <!-- 페이징 끝 -->
 
 <!-- 검색폼 시작 -->
 <div class="kboard-search">
  <form id="kboard-search-form-<?php echo $board->id?>" method="get" action="<?php echo $url->toString()?>">
   <?php echo $url->set('pageid', '1')->set('target', '')->set('keyword', '')->set('mod', 'list')->toInput()?>
   
   <select name="target">
    <option value=""><?php echo __('All', 'kboard')?></option>
    <option value="title"<?php if(kboard_target() == 'title'):?> selected="selected"<?php endif?>><?php echo __('Title', 'kboard')?></option>
    <option value="content"<?php if(kboard_target() == 'content'):?> selected="selected"<?php endif?>><?php echo __('Content', 'kboard')?></option>
    <option value="member_display"<?php if(kboard_target() == 'member_display'):?> selected="selected"<?php endif?>><?php echo __('Author', 'kboard')?></option>
   </select>
   <input type="text" name="keyword" value="<?php echo kboard_keyword()?>">
   <button type="submit" class="kboard-thumbnail-button-small"><?php echo __('Search', 'kboard')?></button>
  </form>
 </div>
 <!-- 검색폼 끝 -->
 
 <?php if($board->isWriter()):?>
 <!-- 버튼 시작 -->
 <div class="kboard-thumbnail-poweredby">
     <div class="kboard-control">
         <div style="float:left"><a href="http://www.cosmosfarm.com/products/kboard" onclick="window.open(this.href);return false;" title="<?php echo __('KBoard is the best community software available for WordPress', 'kboard')?>">Powered by KBoard</a></div>
         <div style="float:right"><a href="<?php echo $url->set('mod', 'editor')->toString()?>" class="kboard-thumbnail-button-small"><?php echo __('New', 'kboard')?></a></div>
     </div>
< /div>
 <!-- 버튼 끝 -->
 <?php endif?>
< /div>

스킨의 editor.php 파일의 전체 코드를 올려주시겠어요?

올려주신 코드로 수정할 경우 글쓰기가 가능한 사용자한테만 Powered by KBoard가 노출되는 현상이 발생합니다.

굵게 표시된 코드를 추가해봤습니다.

<div class="kboard-thumbnail-poweredby">
    <div class="kboard-control">
        <div style="float:left"><a href="http://www.cosmosfarm.com/products/kboard" onclick="window.open(this.href);return false;" title="<?php echo __('KBoard is the best community software available for WordPress', 'kboard')?>">Powered by KBoard</a></div>
        <div style="float:right"><a href="<?php echo $url->set('mod', 'editor')->toString()?>" class="kboard-thumbnail-button-small"><?php echo __('New', 'kboard')?></a></div>
    </div>
</div>