Exception during in-place 4.2.1 to 4.3.1 upgrade

[Cantor, Scott]

> Am I safe to proceed with this workaround and can I safely remove the
> property again afterwards? Is this a bug in the installer or in our
> installation?

Bug in the installer, shouldn't be any problem. The generator is rebuilt in 5 but I'm not sure if it still requires specific properties, but either way it really shouldn't.

The intent was that it only runs on an initial install though, which can assume the usual properties. The bug might be in whatever caused it to run but I seem to recall I reported that and we fixed it.

-- Scott