I've been working on this for about a week now. I'm using an Addonics ADZIFCF ZIF to CF adapter, and a SanDisk Extreme III 16GB CF card. I have not been successful in getting past the "System Files Missing..." screen on start up. I have even checked out the code for Rockbox via SVN with the VMWare Player, and built current copies of the rockbox.zip and H10_20GC.mi4 files...still no luck. I'm wondering if maybe it is the SanDisk CF card I'm using that is the problem?