Sorry for not being more specifc but Iam kind of a newbie here.
Anyways, I dont think Iam using movie studio. Iam using Vegas 6.0.
Thats all it says. Unless that is movie studio? Its the only version of Vegas
i have ever used.

In the "About software" window I can read this:

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MPEG

mcplug.dll = not loaded

AC3

ac3plug.dll = not loaded.

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Can this have something to do with it?
Thanks in advance!