modified get_filenames() to return FALSE if the directory cannot be read
diff --git a/system/helpers/file_helper.php b/system/helpers/file_helper.php
index ef07de7..0005c2a 100644
--- a/system/helpers/file_helper.php
+++ b/system/helpers/file_helper.php
@@ -184,6 +184,10 @@
 			}

 			return $_filedata;

 		}

+		else

+		{

+			return $FALSE;

+		}

 	}

 }