I downloaded the latest version from the OP's Windows mega link just for you to make that 7z archive. The file modification times will always be all over the place when one effectively glues two games together.Man that's not the latest version of the game.
Last modified date of the LC.sh file is 22 March
You said you were only swapping the game folder, not the LC.sh file.
That means this is still the previous version of the game....not the updated one.
I wanna be thankful, but that's the logic behind my first statement of doubt.
Please correct me if I'm wrong by giving me an explanation.
I don't wanna say untruthful things.
In any case, have you tried playing? It says "LC3 FIN" in the bottom right corner of the main screen and with the gallery hacked open there's v0.3 content visible. If you really want to make sure you can always unpack scripts.rpa and find
define config.version = "C3_FINAL2"
in options.rpy.I just wanted to help you out getting the game running. Cheers.