I have downloaded Photoshop Cs5 Extended but when I click 'Install' I am told that install cannot be opened because it was damaged and that I should Eject the Disc Image. I have tried re downloading it 4 times now and I receive the same message. What can I do to install it?
When you ask a question you need to provide some basic information
-Forum quick start https://forums.adobe.com/docs/DOC-5601
Mac or Windows, and EXACTLY which version of the operating system?
Recent Mac AND Windows operating systems have been known to cause "odd" problems
Are you using a computer Administrator account with full read/write permission?
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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