I found a weird bug, maybe it's percular to my configuration only.

First some background:

I have several external runtimes: Micheal, Aiko, ...

When you exit Poser, it writes LibraryPrefs.xml.  When you start it puts you in the same place.

Now the problem:

If the external library points to Victoria 4, Poser starts, but as soon as I move my mouse it crashes.

Once I restored LibraryPrefs.xml, it worked OK.

As I said could be a fluke, or one-off