Finaly I found a solution!
Thanks to Andrew Paternoster (somewhere else in this newsgroup he posted
I had the same problem. and i fixed it by going here
download the file that matches your OS. ie x32 or x64
If you try to run the file it will tell you the patch is already installed.
but run the file with "/extract" extrace the file to someware and run
Let it do its thing. It takes a while......Then presto. well as least for
For me it worked. So I extracted the file and run the dw20w.msp. It took
about 45 minutes before the update finished. I can imagine that it depends
on the size of the environment.