I have a solution. I am using Photoshop CS5 (version 12.0.4) with macOS High Sierra (10.13.3). As far as I can tell everything in the program functions properly, but I have not done extensive testing. An annoying behaviour was that upon quitting Photoshop, it would unexpectedly quit. Annoying, but no harm done if all documents were saved and closed first. If the following Plug-in is removed, the unexpectedly quit is not presented. /Applications/Adobe Photoshop CS5/Plug-ins/Extensions/ScriptingSupport.plugin However, if one requires the scripting support I guess one is out of luck. Regards
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