Quote - Sorry, can't verify this error with V22a.
Did you extract all files contained in the package and overwrite the old?

I unzipped into an empty folder and started from there without errors.

Actually I've been deleting the older folder as a new version arrives, then unzipping the newer version into a folder named after the zip, just to make absolutely sure there's nothing left from older versions.

Windows 7 64Bit
Poser Pro 2010 SR1