Ignore the occasional error??? You're suggesting he settle for buggy code? What in the world?
Maybe today the error is infrequent, but if right after you go live conditions change so the program freaks out once an hour, what are you going to do then? And it doesn't even meet his (relaxed) specs now.
We can't advise anything about your code without seeing it (the VI itself, NOT a picture), and if you could also attach the LV drivers (or subVIs) for the power supplies, so we could see how it fits into the picture, it should help.
Cameron