Hey! I alerted you on the USC server, but I wanted to also post it here just in case:
I know some people were having CTD issues when loading the game. I found out the culprit was the mission class being defined incorrectly as well the folder it was in misnamed. (Casing issues. GLStest instead of the correct GLSTest.) I went ahead and fixed the issue by changing the .java code, recompiling with OpenJDK 17, and re-zipping/jarring to confirm it works.
I've verified it working now, and would like to either give you the updated version to publish or have you make these changes to fix the mod for everyone, please. I can DM you the updated .zip through USC if you'd add me there. @Terraphice
(Or I can upload a link here. I didn't want to step on your toes though.)