itch.io

That’s not because of GM version update, that’s because you have spaces in your project path.

Try changing extensions\GMLive_fallback\pre_built_step.bat to

@echo off
if not exist "%YYprojectDir%\scripts\GMLive\GMLive.gml" (
	echo GMLive script is amiss, copying fallback
	copy "%YYprojectDir%\scripts\GMLive\GMLive.fallback.gml" "%YYprojectDir%\scripts\GMLive\GMLive.gml"
	cscript /nologo "%~dp0pre_build_step_warn.vbs"
)