Empty image list at browse images in tinymce

Hi,
I want to insert an image into tinymce.
But when i click on browse images it appears just a empty list :-(
(see attachment)

any suggestion for that problem? oO

thx

More Infos:
ModX V 1.0.4
Tinymce V 3.3.5.1

There are several things that can cause this problem. First, check your path and URL in the site Configuration, the Interface and Features tab, as well as the File Manager tab. The path needs to be the full file path from the server root. The default URL of assets/ should be OK. Now check the admin user’s User tab to make sure it’s using the system default settings for allowable filetypes and paths.

Another problem can be the server’s security settings. One way this can be a problem is if it is configured to only allow a certain level of directory depth for running scripts; the resource browser requires at least 6 levels to be able to access its files.