What revision of the FP-1600 do you have? The version number is found by looking at the Assy# on the bottom of the module. For a FP-1600, the Assy# is 185690x-01 where x is the revision level. If your module is not revision E, I recommend contacting National Instruments Support for an RMA, and request an ECO upgrade to revision E.
If your module is a revision E module, please let me know and we will take it from there.
Regards,
Aaron
LabVIEW Champion, CLA, CPI