I was able to fix this with a combo of multiple fixes above. (Cintiq 27QHD) 1: Go into the Wacom Desktop Center 2. Click Backup Settings 3. Click Reset Settings to Reset your tablet settings to a factory default. This should get rid of all the application icons you have in Wacom Tablet Properties. 4. Now go into Wacom Tablet Properties 5. In my case I go into the EK Remote settings. (For a tablet you may have to go to Tool>Functions>Express Keys 6 (from another response) On the line "Application" click on the symbol + on the right to add a new application ; don't use the list of applications (don't click on the name Photoshop you find in it)! but search on your computer the new Photoshop.exe in Adobe Photoshop CC 2018 and click Open. That did it for me! Just resetting the settings and adding the applications over again. Thanks everybody for all the input!
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