has been translocated

I’m running Catalina 10.15.1 and suddenly am unable to run my code in the Xojo IDE. As soon as it compiles I immediately get the scary “ will damage your computer…” dialogs and the app quits. Since is created at run-time I can’t figure out how to fix it. It will run non-sandboxed, but this is a MAS app that I’m close to releasing, so I’m very stuck. Does anyone have any suggestions for fixing this? I’ve tried running the code in Xojo 2019 r2, r2.1, and r3 with the same result.
Thanks for any help.

Everything points to a malware.