Upgrading to 1492 debug in portable mode on Vista 32 from 1490 and it comes up as un-licenced.
On entering my licence details (after some time scouring some very old emails
It then reports back as invalid licence
Reverted back to 1490 where I am a Lifetime Gold member again
ps Also tried 1491 and the same problem so it appears to something on the 1490 to 1491 change.