Formfilter and IMCE conflict

Hi,

I'm currently using Tinymce editor with IMCE support; this permit my user uploading and inserting images in content while creating pages.
As administrator of my site I also use form filter to "clean" the add/node form.
For my powerless user I don't check "view forms without filtering" in access control, but this create a conflict with IMCE module.
Doing this I'm not able to see the button to upload an image from local computer, in Tinymce's Image popup window, and I get an error in drupal.js on line 31.

Anyone could help me?