Error: Object referenced not set to an instance of an object.

[sub]

Glad to hear it fixed the problem.

You cant just use any old random codecs and hope it works. They all have their own specific quirks. In this case you must have had some combinations of codecs that didnt like each other.

[jumon]

I've always used the allinone code pack on my systems and they have played every video type I have thown at them. Maybe I can try stripping out a few and see if I can still use the pack. Thanks for the help, I would never have guessed that was the problem!