Hello,
This failure most probably has something to do with graph (or chart) scaling on your front panel. Do you have a pared-down version of the VI that I could use to reproduce the problem? If so, please let me know, and I will work with R&D to determine the cause and a possible solution. For now, you may want to remove any programmatic scaling in your VI until we know more information.
Thanks for your patience on this issue, and please let me know how I can help further.
Have a pleasant day,
Darren Nattinger
Applications Engineer
National Instruments