The only tricks that finally did work in my own iMac I found from the URL I used hours in struggling with various suggestions that I found with Internet searches, removing existing and re-installing new drivers and trying to locate certain files and place them in appropriate boxes of the user interface as instructed, restarting my Mac repeatedly, but to no avail. Wacom has instructions and videos at their web pages on how to solve the problem, but for some reason they did not quite match the problem as it appeared in my iMac, and the suggested solutions did not replicate on instruction videos what was happening on my screen, either. There was a nightmare of a problem in making the Wacom pen work again with the tablet. It turned out that Apple’s Gatekeeper triggers an “unidentified developer” warning when anything is downloaded outside the Mac App Store and prevents your Wacom device communicating with your Mac properly. Also, the mouse moved the cursor normally on the screen.īut when using the Wacom pen over the tablet in Photoshop, a window popped out with an error message saying “Security settings prevented the Wacom software from posting an event”. Release) and Wacom Desktop Center (6.3.42-1).

I transferred all my data and apps from my old iMac via the Time Machine, and initially everything seemed to work fine in my new computer, including Photoshop (which I could now update to 2021, 22.3.1. I recently upgraded from it into my new iMac (Retina 5K, 27-inch, 2020) with macOS Big Sur, Version 11.3. I have a Wacom Intuous Medium tablet that was quite easy to install in my previous iMac from 2010, running on OS High Sierra, with hardware too old to enable newer OS updates. Wacom Intuous tablet pen may have problems after upgrading to macOS Big Sur.

Wacom mac os sierra solved