I had a hard time choosing the location of this post because it deals with the counter/timer and instrument control.
I installed the PCI-6602 driver and I could interact with the timing card by opening NI MAX and running self test. (I'm not sure which version of the driver was installed.)
I then installed the GPIB-USB-HS+ driver (NI-488.2 for Windows and LabVIEW Real-Time version 18.5) and lost ability to interact with the timing card. NI MAX no longer had the option to run self test on that device.
Has anyone else encountered this issue?