I've got an MSI app with a transform.

It's in ZEN/NAL just fine.

If I leave it at Default, it bombs out immediately with a 1603
If I set it to anything other than Reduced or Full, it bombs out with

But if I run it "manually" via msiexec /i blah.msi /TRANSFORMS=blah.mst

then it works fine.

The problem with "reduced" in NAL is that you can see the Cancel button
and click it (and our users would do that).

Don't know why "progress" fails, but apparently that's not the same as