"'Install' is damaged and can't be opened." Help!

Thanks for your thoughts, Jeff. But I'm still running OS 10.11.6, and I had CS5 running on it forever. A repair wiped my hard drive, and I just want to rebuild what I had. Shouldn't there be a way to download a Photoshop CS5 installation file? Why would adobe still have a link to do so? Download Adobe Creative Suite 5 products

Loren

BTW, browser didn't seem to be an issue. I didn't get anywhere with either Safari or Chrome.

CS6 and earlier programs have not been tested and will not be updated for Mac El Capitan/Sierra

-which means that you try to use CS6 and earlier at YOUR risk of having problems due to Apple updates

-Apple did not maintain backward compatibility with old programs in El Capitan or Sierra

--Adobe has a workaround to Apple's problem of not maintaining backward compatibility

--READ HERE https://forums.adobe.com/thread/2301916 for an Adobe solution to installing old programs, including a link to installing the old Java runtime that is required

try another browser or, if you have an incompatible os (eg, sierra or high s) https://helpx.adobe.com/creative-cloud/kb/install-creative-suite-mac-os-sierra.html

[ moved from Creative Cloud Download & Install to Downloading, Installing, Setting Up]