Crystal HD not enabled in XBMC

I updated XBMC to 10.1 last Saturday (4/2/11); after doing so, Crystal HD disappeared from / Settings / Video / view.  I've tried going into nito and enabling the Crystal HD through nito / settings / utilities / kernel extension manager / but it still doesn't show as an option when I go back to XBMC.

I've restarted the AppleTV, went back to factory default settings for the AppleTV and reinstalled everything but still, no dice.

Please assist!

same for me ,no work 

same problem!!

Please help me!!

Same Problem.  Please help