I have downloading from link given by adobe support for my photoshop (seriel No). After downloading Photoshop extended CS 5 it will not install. It says "Install is damaged and can't be opened you should eject the disk image . Install is on the Disk image" I ejected out of Finder and deleted from downloads and re downloaded (it takes a long time) same thing happened again. What can I do next please?
IF Mac El Capitan read below
CS6 and earlier programs have not been tested and will not be updated to run on Mac El Capitan
-which means that you try to use CS6 and earlier at YOUR risk of having problems
-you may get CS6 and earlier programs to install and run, or you may not (some do, some don't)
That MAY be a false error message due to Mac El Capitan and OLD programs
This information is a MUST DO to install old programs on Mac El Capitan
-you may not get the same error message, but these are some links that MAY help with old programs
-Java https://helpx.adobe.com/dreamweaver/kb/dreamweaver-java-se-6-runtime.html may help
Install CS5 on Mac 10.11 https://forums.adobe.com/thread/2003455 may help (also for other than CS5)
-also a TEMPORARY security change https://forums.adobe.com/thread/2039319
-and more on gatekeeper https://support.apple.com/en-au/HT202491
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