Hi Bernhard,
Does this only happen with VISA serial VIs or with all VISA VIs. If you try opening the Basic Serial Write and Read example VI from the example finder, does LabVIEW still crash? You might have a corrupt installation, and I would suggest reinstalling the latest version of the VISA driver for your OS from
here. Hope this helps. Good luck!
Regards,
Ebele O.
National Instruments