diff --git a/config/config.php b/config/config.php
index eb812cc..03d2f78 100755
--- a/config/config.php
+++ b/config/config.php
@@ -97,7 +97,7 @@ if (strtoupper(substr(PHP_OS, 0,3)) === 'WIN') {
 }
 
 $in = parse_incoming();
-session_start();
+@session_start();
 session_write_close();//避免session锁定问题;之后要修改$_SESSION 需要先调用session_start()
 $config['autorun'] = array(
 	array('controller'=>'user','function'=>'loginCheck'),
diff --git a/controller/explorer.class.php b/controller/explorer.class.php
index c7ad34d..9e694d2 100755
--- a/controller/explorer.class.php
+++ b/controller/explorer.class.php
@@ -101,9 +101,12 @@ class explorer extends Controller{
         }
 
         //回收站不记录前进后退
-        if($this->in['path'] != '*recycle*/' && $this->in['type'] !=='desktop'){
-            $_SESSION['this_path']=$user_path;
+        if (isset($this->in['type'])){
+            if($this->in['path'] != '*recycle*/' && $this->in['type'] !=='desktop'){
+                $_SESSION['this_path']=$user_path;
+            }   
         }
+
         $list=$this->path($this->path);
         $list['history_status']= array('back'=>$hi->isback(),'next'=>$hi->isnext());
         show_json($list);
@@ -254,7 +257,7 @@ class explorer extends Controller{
         }
         $state = $error==0?true:false;
         $info = $success.' success,'.$error.' error';
-        if (count($info_list) == 1 && $error==0) {
+        if ($error==0) {
             $info = $this->L['remove_success'];
         }
         show_json($info,$state);
@@ -391,7 +394,7 @@ class explorer extends Controller{
     }
     public function pathPast(){
         if (!isset($_SESSION['path_copy'])){
-            show_json($this->L['clipboard_null'],false,$data);
+            show_json($this->L['clipboard_null'],false,array());
         }
 
         session_start();//re start
diff --git a/lib/function/file.function.php b/lib/function/file.function.php
index 75ab376..af6f2a0 100755
--- a/lib/function/file.function.php
+++ b/lib/function/file.function.php
@@ -50,8 +50,9 @@ function iconv_system($str){
 }
 
 function get_filesize($path){
-	return abs(sprintf("%u",filesize($path)));
-}
+	// 某些情况下filesize会出错
+	@$ret = abs(sprintf("%u",filesize($path))); 
+	return (int)$ret;}
 /**
  * 获取文件详细信息
  * 文件名从程序编码转换成系统编码,传入utf8，系统函数需要为gbk
@@ -130,7 +131,7 @@ function get_path_ext($path){
 
 //自动获取不重复文件(夹)名
 //如果传入$file_add 则检测存在则自定重命名  a.txt 为a{$file_add}.txt
-function get_filename_auto($path,$file_add){
+function get_filename_auto($path,$file_add = ""){
 	$i=1;
 	$father = get_path_father($path);
 	$name =  get_path_this($path);
@@ -291,7 +292,8 @@ function path_haschildren($dir,$check_file=false){
 			if ($check_file) {//有子目录或者文件都说明有子内容
 				if(is_dir($fullpath.'/') || is_file($fullpath)) return true;
 			}else{//只检查有没有文件
-				if(is_dir($fullpath.'/')) return true;
+				@$ret =(is_dir($fullpath.'/'));
+				return (bool)$ret;
 			}
 		} 
 	} 	
@@ -628,8 +630,8 @@ function file_download_this($from, $file_name){
 		}
 		//下载完成，重命名临时文件到目标文件
 		del_file($file_name);
-		rename($temp_file,$file_name);
-		return true;
+		$rename_ret = @rename($temp_file,$file_name);
+		return (bool)$rename_ret;
 	}else{
 		return false;
 	}	
diff --git a/template/editor/edit.php b/template/editor/edit.php
index 8d71646..5ea7706 100755
--- a/template/editor/edit.php
+++ b/template/editor/edit.php
@@ -89,7 +89,7 @@ http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 <script src="<?php echo STATIC_PATH;?>js/lib/ace/src-min-noconflict/ace.js?ver=<?php echo KOD_VERSION;?>"></script>
 <script src="<?php echo STATIC_PATH;?>js/lib/ace/src-min-noconflict/ext-language_tools.js?ver=<?php echo KOD_VERSION;?>"></script>
 <script type="text/javascript">
-	G.frist_file = "<?php echo $_GET['filename'];?>";
+	G.frist_file = "<?php echo (isset($_GET['filename']) ? $_GET['filename'] : '') ;?>";
 	G.code_config = <?php echo $editor_config;?>;
 	G.code_theme_all = "<?php echo $config['setting_all']['codethemeall']?>";
 	seajs.config({
diff --git a/template/editor/editor.php b/template/editor/editor.php
index 02e05b7..d29d652 100755
--- a/template/editor/editor.php
+++ b/template/editor/editor.php
@@ -50,7 +50,7 @@
 <script src="<?php echo STATIC_PATH;?>js/lib/seajs/sea.js?ver=<?php echo KOD_VERSION;?>"></script>
 <script src="./index.php?user/common_js#id=<?php echo rand_string(8);?>"></script>
 <script type="text/javascript">
-	G.project = "<?php echo $_GET['project'];?>";
+	G.project = "<?php echo (isset($_GET['project']) ? $_GET['project'] : '') ;?>";
 	seajs.config({
 		base: "<?php echo STATIC_PATH;?>js/",
 		preload: ["lib/jquery-1.8.0.min"],