Getting error code-200429 when executing a DAQmx Read

[DanNatCorning]

Hello again all.  I'm once again up against an error in a seemingly simple part of my code.  I'm using a USB-6009 multifunction I/O module.  I am currnetly controlling two Mass Flow Controllers with analog out 0 and 1 (device 1).  I'm also using analog in 0 and 1 to read the indicated voltages back from those MFCs.  I have recently tried to add a third analog in (first ai2, and then ai3) to read the analog signal coming in from an Alcatel Helium Leak Detector.  Every time I run the vi, I get an error message (200429, pointing to the DAQmx Read function.  The indicator for the Alcatel voltage reads 0.00.  Can anyone suggest some solutions?

[chrisger]

hi there

you can't use a VISA task after it has been closed (see attachment)

[DanNatCorning]

Never Mind...I got it.  I had to go into my sub vi where I initialy created the DAQ channel, and add another channel to it.  It seems a little frustrating that you must create all of them simultaneously, rather than add them as you go.  Anyway, it works great now.  I just input dev1/ai0:2, and I'm up and running!  Thanks anyway.