I've just been looking at the empeg CPU card. I hope your pictures aren't as cropped in the install manuals. The part showing the crystal can be misleading since the crystal can be soldered to the board either way around. Only if you look very very carefully at the vias can you make out which way is up. My board happens to have the crystal the other way around. A less cropped view will obviously show which side is which with the DSP and the 6MHz crystal on either side.

Also are you sure that side of the crystal you are connecting to is the OSC_OUT (pin 64) side? i.e. is it the side driven by the internal oscillator. I'm not saying you're wrong, just check you have it right.