Hi @bardmorgan_7142 , That error seems to be a UI-related error with the Build Script Template editor. Basically that __ahempty value is meant to trigger a validation warning to force you to pick a package source. When you edit the build script, what do you have set for the package source drop-downs? It should be a ProGet feed, at least for publishing. But it's not required. Also, if you "Edit As OtterScript", you should be able to see where the __ahempty is being added to the script, and hopefully fix. Seeing taht would help us debug it :) Cheers, Alana