diff --git a/adm/admin.lib.php b/adm/admin.lib.php
index 0f0b55418..3a26820ad 100644
--- a/adm/admin.lib.php
+++ b/adm/admin.lib.php
@@ -176,7 +176,7 @@ function get_theme_config_value($dir, $key='*')
     $tconfig = array();
 
     $theme_config_file = G5_PATH.'/'.G5_THEME_DIR.'/'.$dir.'/theme.config.php';
-    if(is_file) {
+    if(is_file($theme_config_file)) {
         include($theme_config_file);
 
         if($key == '*') {
diff --git a/bbs/group.php b/bbs/group.php
index 002ac91f5..02c8ee979 100644
--- a/bbs/group.php
+++ b/bbs/group.php
@@ -28,9 +28,9 @@ include_once(G5_LIB_PATH.'/latest.lib.php');
 <?php
 //  최신글
 $sql = " select bo_table, bo_subject
-            from {$g5[board_table]}
+            from {$g5['board_table']}
             where gr_id = '{$gr_id}'
-              and bo_list_level <= '{$member[mb_level]}'
+              and bo_list_level <= '{$member['mb_level']}'
               and bo_device <> 'mobile' ";
 if(!$is_admin)
     $sql .= " and bo_use_cert = '' ";
diff --git a/common.php b/common.php
index dd06dca88..89fdef84a 100644
--- a/common.php
+++ b/common.php
@@ -139,7 +139,7 @@ if (file_exists($dbconfig_file)) {
 
     sql_set_charset('utf8', $connect_db);
     if(defined('G5_MYSQL_SET_MODE') && G5_MYSQL_SET_MODE) sql_query("SET SESSION sql_mode = ''");
-    if (defined(G5_TIMEZONE)) sql_query(" set time_zone = '".G5_TIMEZONE."'");
+    if (defined('G5_TIMEZONE')) sql_query(" set time_zone = '".G5_TIMEZONE."'");
 } else {
 ?>
 
@@ -485,7 +485,7 @@ if(isset($config['cf_theme']) && trim($config['cf_theme'])) {
 
 
 // 테마 설정 로드
-if(is_file(G5_THEME_PATH.'/theme.config.php'))
+if(defined('G5_THEME_PATH') && is_file(G5_THEME_PATH.'/theme.config.php'))
     include_once(G5_THEME_PATH.'/theme.config.php');
 
 //=====================================================================================
diff --git a/mobile/skin/popular/basic/popular.skin.php b/mobile/skin/popular/basic/popular.skin.php
index 436883642..cf12beed9 100644
--- a/mobile/skin/popular/basic/popular.skin.php
+++ b/mobile/skin/popular/basic/popular.skin.php
@@ -9,9 +9,15 @@ add_stylesheet('<link rel="stylesheet" href="'.$popular_skin_url.'/style.css">',
     <div>
         <h2>인기검색어</h2>
         <ul>
-        <?php for ($i=0; $i<count($list); $i++) { ?>
+        <?php
+        if( isset($list) && is_array($list) ){
+            for ($i=0; $i<count($list); $i++) {
+        ?>
             <li><a href="<?php echo G5_BBS_URL ?>/search.php?sfl=wr_subject&amp;sop=and&amp;stx=<?php echo urlencode($list[$i]['pp_word']) ?>"><?php echo get_text($list[$i]['pp_word']); ?></a></li>
-        <?php } ?>
+            <?php
+            }   //end for
+        }   //end if
+        ?>
         </ul>
     </div>
 </aside>
\ No newline at end of file
diff --git a/skin/popular/basic/popular.skin.php b/skin/popular/basic/popular.skin.php
index 49e0b99e6..5fe041f0f 100644
--- a/skin/popular/basic/popular.skin.php
+++ b/skin/popular/basic/popular.skin.php
@@ -10,9 +10,15 @@ add_stylesheet('<link rel="stylesheet" href="'.$popular_skin_url.'/style.css">',
     <div>
         <h2>인기검색어</h2>
         <ul>
-        <?php for ($i=0; $i<count($list); $i++) {  ?>
-            <li><a href="<?php echo G5_BBS_URL ?>/search.php?sfl=wr_subject&amp;sop=and&amp;stx=<?php echo urlencode($list[$i]['pp_word']) ?>"><?php echo get_text($list[$i]['pp_word']); ?></a></li>
-        <?php }  ?>
+        <?php
+        if( isset($list) && is_array($list) ){
+            for ($i=0; $i<count($list); $i++) {
+            ?>
+                <li><a href="<?php echo G5_BBS_URL ?>/search.php?sfl=wr_subject&amp;sop=and&amp;stx=<?php echo urlencode($list[$i]['pp_word']) ?>"><?php echo get_text($list[$i]['pp_word']); ?></a></li>
+            <?php
+            }   //end for
+        }   //end if
+        ?>
         </ul>
     </div>
 </section>
diff --git a/theme/basic/group.php b/theme/basic/group.php
index 4c47dc818..dd6677b50 100644
--- a/theme/basic/group.php
+++ b/theme/basic/group.php
@@ -19,9 +19,9 @@ include_once(G5_LIB_PATH.'/latest.lib.php');
 <?php
 //  최신글
 $sql = " select bo_table, bo_subject
-            from {$g5[board_table]}
+            from {$g5['board_table']}
             where gr_id = '{$gr_id}'
-              and bo_list_level <= '{$member[mb_level]}'
+              and bo_list_level <= '{$member['mb_level']}'
               and bo_device <> 'mobile' ";
 if(!$is_admin)
     $sql .= " and bo_use_cert = '' ";
diff --git a/theme/basic/mobile/skin/popular/basic/popular.skin.php b/theme/basic/mobile/skin/popular/basic/popular.skin.php
index 436883642..cf12beed9 100644
--- a/theme/basic/mobile/skin/popular/basic/popular.skin.php
+++ b/theme/basic/mobile/skin/popular/basic/popular.skin.php
@@ -9,9 +9,15 @@ add_stylesheet('<link rel="stylesheet" href="'.$popular_skin_url.'/style.css">',
     <div>
         <h2>인기검색어</h2>
         <ul>
-        <?php for ($i=0; $i<count($list); $i++) { ?>
+        <?php
+        if( isset($list) && is_array($list) ){
+            for ($i=0; $i<count($list); $i++) {
+        ?>
             <li><a href="<?php echo G5_BBS_URL ?>/search.php?sfl=wr_subject&amp;sop=and&amp;stx=<?php echo urlencode($list[$i]['pp_word']) ?>"><?php echo get_text($list[$i]['pp_word']); ?></a></li>
-        <?php } ?>
+            <?php
+            }   //end for
+        }   //end if
+        ?>
         </ul>
     </div>
 </aside>
\ No newline at end of file
diff --git a/theme/basic/skin/popular/basic/popular.skin.php b/theme/basic/skin/popular/basic/popular.skin.php
index 49e0b99e6..5fe041f0f 100644
--- a/theme/basic/skin/popular/basic/popular.skin.php
+++ b/theme/basic/skin/popular/basic/popular.skin.php
@@ -10,9 +10,15 @@ add_stylesheet('<link rel="stylesheet" href="'.$popular_skin_url.'/style.css">',
     <div>
         <h2>인기검색어</h2>
         <ul>
-        <?php for ($i=0; $i<count($list); $i++) {  ?>
-            <li><a href="<?php echo G5_BBS_URL ?>/search.php?sfl=wr_subject&amp;sop=and&amp;stx=<?php echo urlencode($list[$i]['pp_word']) ?>"><?php echo get_text($list[$i]['pp_word']); ?></a></li>
-        <?php }  ?>
+        <?php
+        if( isset($list) && is_array($list) ){
+            for ($i=0; $i<count($list); $i++) {
+            ?>
+                <li><a href="<?php echo G5_BBS_URL ?>/search.php?sfl=wr_subject&amp;sop=and&amp;stx=<?php echo urlencode($list[$i]['pp_word']) ?>"><?php echo get_text($list[$i]['pp_word']); ?></a></li>
+            <?php
+            }   //end for
+        }   //end if
+        ?>
         </ul>
     </div>
 </section>