diff --git a/lib/system/system_data_source/file/file.php b/lib/system/system_data_source/file/file.php
index 4539bb1..da894c6 100755
--- a/lib/system/system_data_source/file/file.php
+++ b/lib/system/system_data_source/file/file.php
@@ -121,7 +121,12 @@ class File
 */
 	function readAll()
 	{
-		return implode ('', $this->content);
+		if( is_array($this-content)
+			return implode ('', $this->content);
+		else if( is_string($this->content)
+			return $this->content;
+		else
+			return $this->content;
 	}
 
 /**