Hi, IDK if you're still actively maintaining this project, but currently I'm stuck on this issue.
Currently messing around on one of PeasSoft games with a bit of botched TL, and trying to fix it on…
Found this issue while searching clues for #4 .
With a repackaged .ykc from the original with no modified files, the game engine refuses to use the contained files and popups a missing file warning…