Just got access to the robot again tonight. I tried to run the following in a cmd prompt and I didn't get any errors outside of the GUI:
C:\Users\<user>\AppData\Local\GRIP\app\GRIP-v1.5.2-x64.jar -f <path to my .grip file>
Not sure what I'm doing wrong. The GRIP pipeline did load properly and I still saw the same problem in the GUI.