Hier een oplossing uit een ander forum:
I think i have found a way to fix it. I was getting that message, too. I am running on Windows ME. So i started thinking, 'what would happen if i renamed it?' so i searched for the file and found it in windows/system. I made a restore point in system restore, just in case. I renamed it wmpdxm.dll2, and when i opened explorer, it caused an error in 'msdxm.ocx'...(it is also in windows/system). I renamed that one msdxm.ocx2. now my computer works!!
If anyone tries this, i would recommend creating a restore point beforehand. I hope you will not have a problem with it after you try this.
sjj