Today while tooling around with the D2x I forgot the SB-800 which is my main flash. The only flash in my bag was the SB-28. Normally the SB-28 is only used as a secondary fill flash for multiflash setups so I do not pay much attention to it as an on-camera flash. Trying to use the SB-28 on the camera in TTL mode the camera never fired. What could cause this? Is the D2x not talking to the SB-28, or am I overlooking a setting in the menu setup??