I've just finished migrating the photo gallery on this site to Gallery2, but I had some trouble getting it running. The integration with PHP-Nuke is still in beta, and I'm not fully convinced it supports the version of PHP-Nuke I'm running, especially with the modifications it has.

I took me about 3 tries to get it working. Eventually, I decided to install the gallery itself into /gallery2 and the integration module into /modules/gallery2 so I could keep them seperated. All of that worked, except for the utility to export the PHP-Nuke users. I had to insert the admin user directly into the database to keep it from giving me errors.