On the Agilent mass spectrometer computer
1. Stop MassHunter engines.

2. in "C:\Program Files (x86)\Agilent\MassHunter\Workstation\Acq\bin"
rename AgtVoyEngCore.dll to AgtVoyEngCore-OLD.dll

3. from this RFMassHunter_x software release, in folder "patch 198330"
copy AgtVoyEngCore.dll 
paste AgtVoyEngCore.dll in "C:\Program Files (x86)\Agilent\MassHunter\Workstation\Acq\bin"