In the script folder there are 2 folders.
The content of the forums folder is uploaded to the root of your vBulletin install. The file structure of the upload will coincide with the vBulletin folder layout.
The gallery folder must also stay in tact, but can be placed in many places.
<- vBulletin root http://www.domain.com/gallery http://gallery.domain.com
2) http://www.domain.com http://www.domain.com/forums
<- vBulletin root http://www.domain.com/forums/gallery http://www.domain.com/gallery http://gallery.domain.com
Now you can also change the /gallery/ name it could rename to /photos/ , but would best be done before install.
There should not be a reason the package hanging on install.
- shoot me some ftp / AdminCP access via PM I'll see whats up ill be happy to take a look.