Does anyone know why installing the software that comes with the USB-5680 power meter would cause Labview 8.2 to no longer launch successfully? I think the error was: Fatal Internal Error: lvint.cpp, line 1538.
I did more checking and found that if I remove the usb5680 folder from the Instr.lib folder Labview starts ok. I can also use the VIs in that relocated folder with no problem. Can anyone suggest a likely cause for this problem?
I'm not sure what the root cause of your problem is, but you could try replacing the ni568x.rc file with the one attached to this KnowledgeBase article. I found one issue where replacing this file corrected the exact issue that you are seeing. Let me know if this works and if you have any further issues.