Very strange. It's definitely something specific to you, as I'm sure I would be getting a LOT of complaints if the gallery unlock totally broke the gallery for everyone. I just wish I could be more helpful. So to be clear, on a fresh install without using the unlock, can you move up and down in the gallery? You'll only see static, but there will be an audio cue and shifting static to show you're moving from one entry to the next. In other words, I wonder if the gallery just isn't working period for you for some reason. All the gallery unlock does is swap some "0"s for "1"s in an index; that shouldn't be CAPABLE of breaking anything other than what scenes you can play.
Viewing post in Bug Reports Thread - Version 1.0.x (Content Pack 3)
Well, after testing it out I have found out that the problem wasn't with the gallery itself, but one of my inputs just wasn't working properly. I had to swap keyboards and now it seems to be functioning properly. Turns out the problem was indeed on my end, so I am so, so sorry that I wasted your time with this- Should've been more thorough on my testing. Thank you for your attention and once again, really sorry!