Hi,
I don't use this OS but I think that more information could help someone in the forum find a solution for you. So:
1) Have you tried running in highlight execution ? Where exactally does the vi stop?
2) Does the problem occur for every vi containing VISA? You could try running an example (Basic Serial Write and Read.vi) instead of a final application.
3) Do you have on another pc to try running your program on it?
FSouza