There are a few clues in the Error Message. I've not used Counters much, but from looking at your code and the Error details, it looks like you are using the 6612 to deliver a Logic High to some piece of equipment, then use 5 counters on the same card to count "things" until you push the End button and send Logic Low. The Error Message suggests that a digital signal going to the Gate of Counter 4 from the DI ports you assigned to the top DIO task can't be used as it is under the control of the DIO task. [That didn't come out quite right, but the conflict seems clear in the Error Message].
Here's what I'd try. It could be that the code is largely correct (or largely incorrect -- this should help figure it out), but that Channel 4 is somehow "mis-configured.
Make a copy of this VI. Using the Copy, strip it down to the single DI port associated with Counter 0, and remove the code for Counters 1-4. You should now have only two DAQmx Tasks, the DI task and one Counter Task. Does it run OK? If the answer is Yes, see how Ctr 4 differs (in "Obscure settings") from Channel 0 and fix it.
Bob Schor
