Rob,
Glad you got it to work. If you have any questions at all about the app-note or why your particular card didn't work, please post back and I'll do my best to answer it.
In general, some cards are sensitive to address line zero (A0) toggling when they are in a 16-bit area. Future spins of the boards will have A0 tied down.
For more information about the subject, please see the post in this discussion group entitled "LH7A400-10 Compact Flash Potential Issue" which should be directly accessable at the URL below.
http://www.logicpd.com/su.../viewtopic.php?t=138
Best regards,
--mikee