Quote - really weird, I got this message today too when starting up poser.  Sooo what do I do? I didnt install anything new since the last time I started poser.

The usual culprit is a file with an "&" in the folder name.

It may be an item that you installed some time ago, what triggers it is visiting that folder, and then exiting with that folder as the last one in that library category that you looked at for the Runtime that it's in.

You can edit the file in a text editor to correct the problem, but you must also rename the directory to stop it reoccurring.
I can't help much more without seeing the file (copy, change the extension to .DOC and attach, even a screenshot might be good enough).