As in the gallery won't open? When you click on it, the game attempts to load at least 12 images at once (around 100mb in memory), so if your computer has a low end GPU it might take a bit for the Gallery to open. Restarting the game should help, but if the gallery won't open at all, then another issue might be occuring and preventing it from opening, in that case I'd need the log file.
As for cheats, you can open the console by pressing F1. You can edit some variables by executing the "var" command.
There are other cheats as well in form of commands, they are included in the Game Design Document which you can get here: https://www.patreon.com/posts/69538623