Blue Screen (STOP: 0x00000050) when using multiple Agilent34970A devices with a single GPIB

Hi,
I am using two test fixtures that contain two Agilent34970A Multimeters and two Sorensen Power Supplies (each test fixture is contaning one Multimeter and one Sorensen Power Supply) that are connected via GPIB cables to a single PCI-GPIB card. Below I have attached two VI's. GPIB_Communication_Experiment_1.vi (Test Fixture 1) and
GPIB_Communication_Experiment_2.vi (Test Fixture 2) are used to run self test on the
Agilent34970A multimeters. GPIB_Communication_Experiment_1.vi is talking to one of the Agilent Multimeters and one of the Sorensen Power Supplies (Address 9 for Agilent Multimeter and Address 2 for Sorensen Power Supply) whereas GPIB_Communication_Experiment_2.vi talks to the second Agilent Multimeter and its Sorensen Power Supply (Address 10 for the Multimeter and Address 3 for the Sorense Power Supply).
The Problem occurs when I try to run these two VI's simultaneously where it generates a "blue screen of death" with a Technical Information : STOP: 0x00000050 (0xF8AC00440, 0x00000000, 0x8041889, 0x00000000).
This Problem only occurs when trying to run the executables that were built from the attached VI's.
I have tried to use VISA CLEAR within the while loop as you can see in the VI however it did not improve things.
I have also uninstalled and re-installed the software for my PCI-GPIB card but that seemed not to work either.
At this point I am confused.  If I try to run only one Test Fixture at a time I have no problem doing the Self Test on the Agilent Multimeter, yet every single time if I try to run the two test fixtures together I am  gettig the blue screen.
Besides the two executable VI's I have also attached the regular VI's
I would really appreciate your help, thanks in advance for your time.
Attachments:
GPIB_Communication_Experiment_1.vi ‏23 KB
GPIB_Communication_Experiment_2.vi ‏23 KB

Hello aps7828:
If I read that correct, you only get the error when you run the executables and not the VIs. Can you take a look at your processor level while one .exe is running. I am wondering if that is the source of the problem.
Regards,
Roland A.
Applications Engineer
National Instruments
Check out VI Roadshow

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