PCI-6111 Error's

Hello,

I have a PCI-6111 coupled with a E5500 phase noise system. When the phase noise measurement software is opened an error message of -10608 will display and will not allow for testing further - this also happens at random it seems, meaning one day it'll be fine and then the next day it won't work at all. We have swapped in another card and the results seem to be the same. So far I'm leaning towards it being the computer itself causing the issues but was hoping for another piece to possibly look at. 

Thank you.