my idea that i got a corrupted dll in an update is not right. the modify date seems to be connected to the burn date on the dvd; the dll is passing a crc with a version from 2001 - meaning the dll has probably *never* been updated.
this piece of gear has a bad reputation, and i guess this is a plausible explanation for it - the driver install breaks it. i just never noticed because i always deleted the class installer before the install finished.