Hi Doughera!
When you say: "When I relaunched LabView, it offered to go and try to diagnose the error", do you mean that LabVIEW gave you the option of Investigate Now, Investigate Later, & Do Not Investigate? Assuming this is what you are referring to, by choosing either Investigate Now or Investigate Later, LabVIEW will generate an error log .txt file. This file is automatically placed in your My Documents\LabVIEW Data\lvfailurelog folder.
Hope this helps!
Travis H.
National Instruments
Travis H.
LabVIEW R&D
National Instruments