Cowboy Studio NPT 04 not firing SB700
I have a similar problem - my one-year old SB400 and the NPT04 won't fire it, either. Using alkaline (Kirkland) batteries in the NPT, the test lights blink but no fire. I move the SB400 on to the camera, D7000 and it fires fine. I wrote the help desk at CS and they offered a nice note back asking me to check some things but ensuring I use non-rechargable batteries, etc. didn't fix the problem.