Casio CZ/ VZ/ FZ - Pro Series

Can anyone help me? I bought a VZ10-M a few weeks back (no manual, of 
course) When I try to load a patch from an editor, I go through the 
process, my PC is sending the programs, but I get an "executing" 
message on the VZ that never stops flashing. I was able to load one 
set of patches, but I must have done something strange that made it 
work without paying enough attention to what I did. Otherwise, I'm 
enjoying my new $130 toy. I've also heard that RAM cards are hard to 
find- I had a tough time finding one for an Alesis a few years back, 
and I found one through a company called "Pretech" which I beleive was 
in San Jose, Ca. They may have them for the Casio, but I haven't 
checked into it yet.
  Anyhow, any help would be great. Thanks!