Agilent 34970 EZ scan.vi error

I am trying to talk to an Agilent 34970A using the Agilent 34970 EZ scan.vi.  I am having trouble getting it to work via GPIB to USB using a NI GPIB-USB-HS.  I am getting an error in VISA Open.  Error - 1073807346 occured at VISA Open in Agilent 34970.lvlib:Initialize.vi  Reason: VISA(Hex 0xBFFF000E) The given session or object reference is invalid. I am using Labview 2012 with WIN7.