If you are using the Festo Double Solenoid that came in this years kit of parts, it requires 24V as opposed to 12V. You would have to power the solenoid breakout via the two available connections on the PD board with the CRIO. The power distribution diagram is shown here
http://www.usfirst.org/uploadedFiles...ution_RevA.pdf
We had the same problem. The lights were coming on but it wasn't doing anything. After searching for help, we found a thread that discussed this years solenoids being 24V instead of 12V. We haven't had any problems since.