diff --git a/adm/sms_admin/history_view.php b/adm/sms_admin/history_view.php
index 498d7fe03..43e144fa4 100644
--- a/adm/sms_admin/history_view.php
+++ b/adm/sms_admin/history_view.php
@@ -131,22 +131,22 @@ function all_send()
     <tr>
         <td><?php echo $re_vnum--?></td>
         <!-- <td><input type=checkbox></td> -->
-        <!-- <td><?php echo $res[wr_message]; ?></span></td>-->
-        <!-- <td><?php echo $res[wr_reply]; ?></td>-->
+        <!-- <td><?php echo $res['wr_message']; ?></span></td>-->
+        <!-- <td><?php echo $res['wr_reply']; ?></td>-->
         <td><?php echo $res['wr_datetime']?></td>
         <td><?php echo number_format($res['wr_total'])?></td>
         <td><?php echo number_format($res['wr_success'])?></td>
         <td><?php echo number_format($res['wr_failure'])?></td>
         <td class="td_mng">
             <a href="./history_view.php?page=<?php echo $page?>&amp;st=<?php echo $st?>&amp;sv=<?php echo $sv?>&amp;wr_no=<?php echo $res['wr_no']?>&amp;wr_renum=<?php echo $res['wr_renum']?>" class="btn btn_03">수정</a>
-            <!-- <a href="./history_del.php?page=<?php echo $page?>&amp;st=<?php echo $st?>&amp;sv=<?php echo $sv?>&amp;wr_no=<?php echo $res[wr_no]?>&amp;wr_renum=<?php echo $res[wr_renum]?>">삭제</a> -->
+            <!-- <a href="./history_del.php?page=<?php echo $page?>&amp;st=<?php echo $st?>&amp;sv=<?php echo $sv?>&amp;wr_no=<?php echo $res['wr_no']?>&amp;wr_renum=<?php echo $res['wr_renum']?>">삭제</a> -->
         </td>
     </tr>
     <?php } ?>
     </tbody>
     </table>
-    <?php } ?>
     </div>
+    <?php } ?>
 
     <?php
     if( $write['wr_memo'] ){
diff --git a/install/install_config.php b/install/install_config.php
index 67d804f3d..468c89372 100644
--- a/install/install_config.php
+++ b/install/install_config.php
@@ -168,7 +168,7 @@ function frm_install_submit(f)
         alert('TABLE명 접두사'+reg_msg); f.table_prefix.focus(); return false;
     }
 
-    if(/^[a-z][a-z0-9]/i.test(f.admin_id.value) == false) {
+    if(/^[a-z]+[a-z0-9]{2,19}$/i.test(f.admin_id.value) == false) {
         alert('최고관리자 회원 ID는 첫자는 반드시 영문자 그리고 영문자와 숫자로만 만드셔야 합니다.');
         f.admin_id.focus();
         return false;
diff --git a/install/install_db.php b/install/install_db.php
index 431ff1740..71e21fa95 100644
--- a/install/install_db.php
+++ b/install/install_db.php
@@ -28,6 +28,10 @@ $admin_pass  = $_POST['admin_pass'];
 $admin_name  = $_POST['admin_name'];
 $admin_email = $_POST['admin_email'];
 
+if (preg_match("/[^0-9a-z_]+/i", $admin_id)) {
+    die('<div class="ins_inner"><p>관리자 아이디는 영문자, 숫자, _ 만 입력하세요.</p><div class="inner_btn"><a href="./install_config.php">뒤로가기</a></div></div>');
+}
+
 $dblink = sql_connect($mysql_host, $mysql_user, $mysql_pass, $mysql_db);
 if (!$dblink) {
 ?>
diff --git a/lib/common.lib.php b/lib/common.lib.php
index a1abcb54b..eb3f7c513 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -2752,6 +2752,11 @@ function module_exec_check($exe, $type)
         } else {
             // 바이너리 파일인지
             if($is_linux) {
+
+                if ( !function_exists('exec') ) {
+                    alert('exec 함수실행이 불가능하므로 사용할수 없습니다.');
+                }
+
                 $search = false;
                 $isbinary = true;
                 $executable = true;