Don't feel bad, they probibly don't know what it means either...
Seriously though, if you go through the same steps and the problem doesn't reoccur the system was probibly just suffering from some sort of glitch.
If it happens everytime you try and build certain functionality try doing the locically identical operation in a different way and see if you can get the problem go away.
If it happens with some frequency, but not every time, try and keep track of what your were doing when the error occurred. For example, were certain programs open at the time? Had you just finished certain operations? Does it happen at a particular time of day? If you try to build the subvi with nothing open but the subvi do you get the same error?
And don't forget the
standard support question:
"Has it always done this? If not, what has changed on your computer?"
Sorry I can't give specifics but these types of problems can be a pain to troubleshoot. Unfortunately if you can't get the problem to occur repeatedly you will be the only one troubleshooting it...
Mike...