Hi Y C,
Check out the following forum posting.
Click Here
They recommend using NationalInstruments.NI4882.dll instead of LanvInt.dll because it works better with Measurement Studio. Try that out and see if it helps.
Regards,
Matt S.
LabVIEW Integration Engineer with experience in LabVIEW Real-Time, LabVIEW FPGA, DAQ, Machine Vision, as well as C/C++. CLAD, working on CLD and CLA.