Hi Louis,
Thank you for posting to the NI forums! What kind of camera do you have? Is there a reason you are using the legacy IMAQ drivers instead of IMAQdx? Are the IMAQ1394 VIs grayed out on your block diagram?
One possible solution to this problem is manually replacing IMAQ1394 Init.vi on your block diagram with the one from your function pallet. Try right-clicking on the VI, selecting
Replace>>All Palettes>>Vision and Motion>>NI-IMAQdx>>Legacy, then selecting the Init VI. This will relink the VI to the correct location. If that doesn't work, can you post your code so I can look over it?
Regards,