I've just updated my iMac to Catalina - was running Yosemite.
I've downloaded the installer for the latest versions of Illustrator and Photoshop, but when I double click on the installer (for both applications) nothing happens. I've redownloaded the installers and still get the same result - litterally nothing happens.
I've been right through all the suggested fixes on the Adobe website - uninstalled my old Creative Cloud and installed the new one - again it wouldn't do it using the installer and I had to use the direct download.
Any ideas?? - got lots of work to get on with an getting a bit desperate - 2am where I am, so I'm giving up and going to bed, so please excuse the lack of responses, thanks etc from me for the next 7 hours or so. I'll come back to this afresh and ready to try anything that gets suggested.
I should perhaps also add that I uninstalled the AVG antivirus software incase that was stopping it run, and I downloaded both apps with Safari which is my default browser. I also have Opera and Google Chrome.