I have the following:
FEZ Hydra (firmware 188.8.131.52)
If I include an X1 module in my project, I can not run the program with or without debug. Using debug I get the Ctrl-Shift-F5 message and pressing Ctrl-Shift-F5 will only repeat forever. Trying to run the program without debug, the T43 display shows BUTTON QUEUE FULL and stops there.
If I take the X1 module out of the project, all runs and works fine.
I have setup the X1 for both socket 1 and 14 and get the same results.
At the current time, I have 2 X1 modules that I can not use.