Every time I launch MCreator it gets stuck on "Loading MCreator Windows". I saw a similar problem someone else posted & have tried the following suggestions with no success.
Uninstall (with the keep settings data checkmark unchecked )
Install (without launching)
I also tried "going to <user home>/.mcreator and delete file called recentworkspaces" but there was no file there as I have never gotten the program open before.