Linux users, this happened to me running the Laigter appimage so FYI:
If you attempt to add any of the Laigter .so-file plugins from this page, and it crashes Laigter, and then continues to crash on app startup, you will need to remove the .so plugin files auto-copied to your home directory to allow Laigter to start normally.
You will find the .so plugin files at:
Go ahead and delete whichever last plugin you activated which caused the crash. You should now be able to run Laigter again.
For me, all three linux plugins from this itch-io page crashed Laigter. However, the .so files for the three plugins found on their github pages installed and worked fine with no crashes:
so it looks like the issue lies with the itch.io download versions.