@Chris, thanks for the reply.
I’ve started with testing on 19 for both SDK and NDK, same error. Only other plugin active is Substance, all other plugins are standard plugins and all non-oculus plugins have been disabled. Building a C++ works, building BP = error.
EDIT: Disabled Substance plugin and BP packaging seems to work now. Wasn’t expecting Substance plugin to be the problem. Is this a known issue and are there plans to fix this? Funny that C++ packaging works with Substance enabled and BP packaging doesn’t.