You would have to have a plugin installed since vBGallery does not put user photos on the forum profile page hense this issue has to do with a hack. Your options at this point are to contact the hack author and see if there is an update to correct any issues with his hack. Or set any profile photo plugin to deactive and or modify the profile template in vb
and remove the code for the hack. I can't say since I did not write the hack what the issue is.
You might want to read this to gain access to the mods forum http://www.photopost.com/forum/photopost-pro-how-do-i/announcements.html