Group Icons Missing!!

Hi, I have recently moved my site to a new server, one of my last problems from it is all of the group photos are missing. When I upload a new photo for a group it says the photo has been uploaded but there is still no photo.

Any thoughts on where I can look? Where do photos go that have been uploaded for a group? I have uploaded some and serached there name but nothing comes up.

Thanks,

4dplane