Visualizer Works in UGS Platform but not UGS Classic?

My computer is running Windows 10 - 64 Bit. I’ve recently updated my controller to GRBL 1.1 then updated to Java 8 Update 171 (64 Bit) and downloaded and installed both Universal Gcode Sender 2.00, both Platform and Classic Versions for testing.

I can load UGS Platform version, open a gcode file and then open the Visualizer. Everything looks to work fine.

However, if I repeat this procedure with the Classic version, when I open the visualizer I’m presented with a plain white, empty Visualizer window.

Has anyone else run into this problem???