I while back I purchased the Adobe CS4 Master Collection with the CDs. I had to update my MacOS to Sierra 10.12.6 recently and when I did, my entire Creative Suite was wiped out. I tried reinstalling Illustrator and Photoshop, but keep getting an error mesage reading (Illustrator) "The localized resource files for this application could not be loaded. Please reinstall or repair application and try again." Ive tried reinstaling and restarting the computer but no luck. I need some Tech help. I called Adobe Customer Service and mentioned and directed me herr to this platform.
CS4 is no longer supported and you won't be able to activate
The CS2-CS3-CS4 activation servers have been removed from service -https://helpx.adobe.com/creative-suite.html?promoid=19SCDRQK -So even if you have a disc or saved download, CS2-CS3-CS4 are completely dead -Adobe also no longer supplies the special non-activation version of CS2-CS3-CS4
That said, CS4 is outdated, unsupported software. It might work or not. Use at your own risk.
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Nancy O'Shea, Product User & Community Expert Alt-Web Design & Publishing ~ Web : Print : Graphics : Media