PRoblem with Advanced Forum

Hi I have the following issue after installing the advanced forum module (have reinstalled it as well and reuploaded everything). It always dispalys a link at the top which probably is supposed to display the image for mark as read button I get the following link instead of the image:

Now I have reuploaded the image as statted but it seems that, that was not the issue. If I than go into the forum I get this link twice.

Tried different themes but all of them have it.