Was the upgrade from LV 82 to 85 teh only upgrade? I assume that the error is happening in your VI when you run it in 85. Does it still work in 82?
Can you see the device working properly in MAX - does the self test, reset, and test panel work in MAX?
I guess what I'm getting at is, at what point do you see the breakage - what works and where does it stop working. Please start looking from MAX, over LV 82 (that used to work) and then try LV 85.
Let us know your findings!
best regards,