I am also having the same problem. I installed the Lite version as a test for purchasing the Pro version - so far I've had substantial problems. I've manually copied the language files (since I'm not using the Default template) and the Gallery now works fine for admin users. However, the Permissions interface contains no Gallery section - it's not a language problem, the "Gallery" section is simply not on the page.
I think this has something to do with text from the XML files not being copied into a Source file, but I'm not sure. Any hints?
BTW, I'm running SMF under the JoomlaHacks bridge.