WMM Vista Compatibility Tab issues

I'm running Windows Vista Ultimate, Windows Movie Maker 6.0.6. I'm trying to import an .avi file, and it won't play in WMM. Just shows a blank screen with no sound.

I checked the compatibility tab under options and the only thing listed is AVI Decompresser 6.6.6. Does anyone know how to get WMM to use the other codecs I've installed?

Screenshots:
General Tab | Advanced Tab | Compatibility Tab

Help?

Edit:
It does this to every avi I've tried so far, but seems to open wmv and mpeg just fine.

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