AllSync & AllDup

It was a problem with the Windows Media Player!
The latter would not start.
This for some reason caused AllDup to crash with aforementioned error message.

Downloaded a WMP fix (http://www.thewindowsclub.com/downloading-fix-wmp)
All is well!

XPSP3
32bit
update hack off
V 3.04.0024 of AllDup

After restart all Filters are gone e.g. *.Doc, *.PDF, *.JPG

Perhaps a clue, when looking in the log file I find this entry:
7/3/2016 10:14:56 AM - INFO: 743 - Unable to create or activate a new instance of 'WMPlayer.OCX.7'.

Run Time Problem in XP systems.

AllDup stopped working on XP systems.
Re-install yields no solution.

Error message (after activating a search):

"Run Time Error '-214731979 (8002801d)':
Automation error
Library not registered.

Any clues?