Quicktime not playing black magic codec files, or avi

Hello!
I'm on a new macbook pro (17"). my friend on an older mac laptop can play back a quicktime file in the player that has the blackmagic codec, but I cannot.

I can open the file and play it in final cut pro, I can see it in shake, but I can't play it back in the quicktime player. it shows up all white, but does list the codec as being the black magic 10 bit uncompressed codec.

I've downloaded the codec from black magic, and dropped it in /library/quicktime, but I'm not getting any result.
I've also tried "touching" the quicktime folder like they recommend, but nothing's working.

quicktime's also not playing back avi files, but I know that can be a bigger issue.

Any ideas?

thanks!
-Josh