Hey. Whenever I start up after effects I get a "plug in CFHDIO.aex could not be loaded". Any thoughts?

It seems there is an Aspect HD 4.3.2 issue with AE, not in the later version, but fortunately it is harmless. Here is a recent post on the subject and how to address it.

http://www.dvinfo.net/conf/showthread.php?t=98777

Thanks David,

So I am to assume that I can still import and export cineform files, just not 10bit?

From Aspect HD you never got true 10-bit, but 10-bit files are still compatible, they will simply decode to 8-bit. The 10-bit support in Prospect HD, still works fine.