What versions of NI-VISA are compatible with CVI 7.1.1

Question

I am stuck using CVI version 7.1.1 due to a customer requirement and need to use VISA functions in a new application. I do not have access to the original driver disk so I don't know exactly which version of VISA to use with this version of CVI.
I was under the assumption that I could download the latest version (4.6.2) and it would be backwards compatible but it does not work for me on two different PCs. In both cases, I get a general protection fault if I try to execute an application that uses any of the VISA functions. Both PCs use Windows XP.
So I need to know which version of VISA is compatible with Win XP and CVI 7.1.1 and will not give me a GPF.
To further complicate things, I also need to know which versions of NI-FGEN, NI-RFSG, NI-HSDIO, and NI-DAQ will work with my setup. I am using PXI-5404, PXI-5651, and PXI-6562 hardware.
Martin Fredrickson
Test Engineer
Northrop Grumman
Advanced Systems and Products
San Diego, CA 92128

Answer 1

The attached screen shot shows the GPF error message I am getting.
I have tested this application on three separate machines with the exact same result. One of them has VISA 4.5 installed, the others 4.6. All of them have CVI 7.1.1 and TestStand 3.1
I get the error if I try to run this application and it has ANY VISA function in it. As soon as I remove them, it runs OK.
All I am trying to do is use the VISA functions to access an RS-232 port. I have done this before without running into any kind of problems.
I need a solution to this problem.
For what it is worth, the calls I am making so far are (if I include any of them and try to run, it gives a GPF):
 status = viOpenDefaultRM (&rsrcMgr); 
 status = viOpen (rsrcMgr, comPortDescriptor, VI_NULL, VI_NULL, &comPort);
 status = viSetAttribute (comPort, VI_ATTR_WR_BUF_OPER_MODE, VI_FLUSH_ON_ACCESS);
 status = viSetAttribute (comPort, VI_ATTR_RD_BUF_OPER_MODE, VI_FLUSH_ON_ACCESS);
 status = viSetAttribute (comPort, VI_ATTR_ASRL_BAUD, baudRate);
 status = viSetAttribute (comPort, VI_ATTR_ASRL_DATA_BITS, dataBits);
 status = viSetAttribute (comPort, VI_ATTR_ASRL_PARITY, parity);
 status = viSetAttribute (comPort, VI_ATTR_ASRL_STOP_BITS, stopBits);
 status = viSetAttribute (comPort, VI_ATTR_ASRL_FLOW_CNTRL, flowControl);
 status = viSetAttribute (comPort, VI_ATTR_ASRL_DISCARD_NULL, VI_FALSE);
 status = viSetAttribute (comPort, VI_ATTR_ASRL_END_IN, VI_ASRL_END_NONE); 
 status = viSetAttribute (comPort, VI_ATTR_ASRL_END_OUT, VI_ASRL_END_NONE);
Martin Fredrickson
Test Engineer
Northrop Grumman
Advanced Systems and Products
San Diego, CA 92128
Attachments:
gpf_with_visa_calls.PNG ‏6 KB