My system is playing CD's fine but I just tried a DVD (non-BluRay) and I get that error!
I have googled about and though I already had the ubuntu-restricted-packages I didn't have all the gstreamer0.10plugins-bad installed (as seems to be the recommended fix). I now have them and MoviePlayer still gives the same error.
I also want BluRay's to be playable and I was investigating that when I thought I would check whether normal DVD's were still working (I'm not sure whether I've tried a DVD since I upgraded to MM).
Good job I did
The DVD mounts ok and appears on my desktop with the title.
Any assistance would be very nice Thanks
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