communicating with Lakeshore643 power supply using instrument driver is showing "Execution Error"!

I am using the examples given for lakshore643 after installing the driver to basically set the output current to some desired values. The instrument I am trying to communicate is Lakeshore 643 Electro Magnet Power Supply. While doing so the error message that I receive is "execution Error" with error code "-1074000000" . Not sure why and how to resolve this? I have attached screenshots of the "set the output current vi" and "block diagram of the decode error vi". Any suggestions would be appreciated.