Downloaded latest version of "Concurrent Clean" (2.4) for Windows. It installs, the IDE runs. I can compile and run a ridiculously simple program:
module blah
Start = 1
The problem is, if I make any change at all (for instance Start = 2, or Start = [1,2,3] or Start = "hi") then the linker says that it could not create the executable. If I delete the existing executable, it can create the executable. Sometimes, if I spawn out of the IDE and come back in, it can create it.
I suspected Windows Defender so I shut it off. Then I suspected UAC so I did as much as I could to shut it off (I don't think you can truly shut it off, but you can adjust the "level" on some control panel GUI).
As a final resort I downloaded version 2.2, and got the same error.
At any rate, if anyone has any ideas or suggestions, I'm listening.