Working with Laura Archer in JMP technical support, she was able to get a solution to the problem.
1. De-register STK from the list of AddIns.
2. Reinstall STK from marketplace.jmp.com.
3. Copy and paste the Maps folder from C:\Users\[username]\AppData\Roaming\JMP to C:\Users\[username]\AppData\Roaming\JMP\JMP.

4. Restart JMP and open STK, click on the Map Manager button.
5. Set the 300mm_Wafer map in the STK Map Library as a background map. It should appear in the list of Unsorted Wafer Maps.
6. Click the Bare Wafer Map (Mapping) button and load the example data. Setup the plot as shown in the demo.
Result: I can now display the demo data with the 300mm_Wafer background map.
