Hi, it may be that you have another plugin that is skipping the splash scene. Are you able to reproduce this issue with only [CGMZ] plugins installed?
Viewing post in [CGMZ] Splash Screen for RPG Maker MZ comments
What error are you getting? It seems weird this plugin would cause issues on the title screen since it does not touch the title scene code at all.
If you want to come into my Discord I can upload the old plugin file there, I would prefer people to use the updated versions of my plugins as I cannot provide support for old versions, and I think it would be confusing for other users if I uploaded old plugin files here.