multiple task analog input call back

[SteveD123]

Until someone with more knowledge than me clarifies how CVI processes overlapping DAQmxEveryNSamplesEvents I think that might be worth trying. Possibly also declare all the local variables as static, so that the storage for each callback is seperately allocated at initialisation, and not on the stack every time the callback is called.

[DieselPower]

I broke up the code such that there was a separate callback function for each task.  I still received the error.  I cannot continue until this is resolved.  Any ideas?

Should I try a newer USB chassis?  Mine is an older white 9178 (not the new silver/grey).