Thank you Don Manfred, Thank you Erel. I think I've found out what the problem(s) was.
- Missing android.jar reference due to path issues. Fixing this added the "missing end sub" report in the log, pointing to nowhere.
- Loose "End If" somewhere (see the image). I've added (the if and the then) at line 450 and I've got 5 new correctly reported errors.
Thank you!