No image selection possible with image module in htmlarea

To make image uploads possible I installed htmlarea and the image module. While the upload of pictures is working I cannot select uploaded pictures in the "classes"-area. It is possible to select a class that is configured with the vocabulary module but no uploaded pictures are showed in the field below.

I want to give the user the possibility to post pictures in comments, but at this time he can only watch his uploaded pictures in a gallery but not in a comment.