I can't reproduce what you report.

Please confirm that in the "Debugging Target" dialog the upper radiobutton is set and the adjacent input field contains this:

##class( %SourceControl.UnitTest).Test()

And if you comment out the "D $ZF(..." line in the classmethod, then recompile it, does that resolve the problem. If not, then I think this proves that the problem isn't caused by the $ZF() call.

Also to say that if you need a response urgently you should contact InterSystems Support, a.k.a. WRC. This forum (Developer Community) is not a substitute for WRC.

By adding that repo I was able to upgrade to 1.0.255.

I guess that my original Atelier kit was built on Eclipse Mars, and that the developers recently moved up to Eclipse Neon but the upgrade mechanism didn't cope with this. Okay for a pre-release version of Atelier, but let's hope a similar thing doesn't happen once it's become a released and widely deployed tool.