Sorry if this isn’t the right place for UE5 bug reports, I’m new and still learning my way around.
Problem: Users who install UE5 preview 2 from the launcher to a non-default install location are unable to clean their own project source.
Solution: Simple edit to Engine/Build/BatchFiles/Clean.bat, move 1 line above another.
Full details here: Generate cpp project Couldn't find UnrealBuildTool - #42 by xi57
Ideally this simple cut/paste change would be committed prior to the next UE5 preview release. 