sosrandom

I assume you have the COM error, its caused by either Nero 7.7 or the FFD Show codec.

Uninstall your codecs and start again, use codec cleaner then install Vista Codec Pack and Vista x64 codec.
Try making media player 64 your default player otherwise, you have to click 'Programs\VistaCodecs\64bit Tools\Set Default Media Player' after installing the codec packs.
If you get the Com error when generating thumbnails try updating your ffs show codecs.
Media usees either 32 bit or 64 bit codecs and the player, whichever you have as the default, you need 64bit codec for the 64but player

If this doesnt work try the