hi everyone, I keep coming here with my questions because I get ignored by Tunetracks and everyone here seems to know what their doing so here goes.
I have a question with the MEMORY AND STATUS box on SDX. at the bottom of the box I get something called UNMATCHED KEY coming on and off.
can someone explain what that means?
also, are there any techniques for using the X-DRUMS, for the life of me I can't get anywhere with that.
thanks 

For "Unmatched Key" see page 55 of the SuperiorDrummer2Manual.pdf. If you are not using a drum map or an incomplete drum map, I can see how the error may show up.
 
Here is the Toontrack video example of an X-Drum setup. Groove3 has a video on Superior Drummer which includes a more general discussion of X-Drum setup.