[quote=350407:@Greg O’Lone]Sorry yes. What I ended up doing is what I described above.
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Thanks - my technique (https://forum.xojo.com/conversation/post/350258 ) of subclassing the mutex and putting that code in the destructor seems to work as well.
@Greg O’Lone: thanks, I’ll try this and report back.
Beatrix - since you are using semaphores, possibly it’s a different issue for you? Or maybe the same code technique would work.
I have been looking in the wrong project. The helper app to the main app has a mutex, which was causing the problem. Deleting the file in app.close fixed the problem. I still think that Xojo should delete the file itself.