hi,
OK,
I setup a new database, deleted all files for PowerGallery from the site.
Uploaded fresh PowerGallery files, v2, ran the install wizard, all ticks, created a gallery and could see the thumbnails in the admin pages, it even previewed ok in the admin pages.
Dropped the code onto the page, uploaded it and although it loads the thumbnails are missing and clicking on them just hangs the page.
Take a look at
coventry_builder_single_storey_extension_gallery.php
Cheers
Mark