Hi 50CentCowboy, the current plugin should work with 4.0. it will produce a warning about the version, but that won't stop it from compiling. The only problem is that dashing and wall jumping don't work well with slopes.
Viewing post in GBStudio Platformer Plus comments
Okay, I'll give it another go. When I tried to run, I got this line in the Debugger:
"Plugin "PlatformerPlus" was created for an older version of GB Studio and may not work correctly. Plugin uses engine "3.2.0-e4" but GB Studio is using engine "4.0.2-e0" and it never seemed to finishing compiling. I'll give it more time to see if it eventually completes.