In case that the trick with ticking of “Allow the apps below to control your computer” (under macOS’s Security & Privacy settings in System Preferences) does not seem to work on first try, as was my case in the beginning, try this: 1. Remove „Adobe Photoshop CS5“ from the list by selecting it and then selecting the - (minus symbol) below the list. 2. Add „Adobe Photoshop CS5“ to the list again by clicking on the + (plus symbol) below the list and navigate to the Photoshop CS5.app in the Applications folder. 3. Tick the box in front of „Adobe Photoshop CS5“ in the list of “Allow the apps below to control your computer”. After re-adding „Adobe Photoshop CS5“ to the list of apps in “Allow the apps below to control your computer” Photoshop CS5 is fully working for me again! https://www.macworld.co.uk/how-to/mac-software/open-apps-wont-work-mojave-photoshop-368442 5/
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