Adobe CS5 Mac iOS High Sierra 10.13.6 Just stopped working! Help

Solution 1:

After paying $1800 at the time for Adobe Creative Suite CS5, I too have no desire to go to a cloud based "pay for play" software, especially during these uncertain financial times.

Have you tried having two hard drives which contain two different operating systems on them?

I have Mac OS 10.8.5 on one hard drive so that I can used Steinberg's Cubase version 6, and I have MAC OS 10.13.6 Hign Sierra on a my main hard drive - I just switch to my "downgrade" hard drive and keep working...and you can access both drives from the menu like normal.

That was my saving grace! I can still use Photoshop on 10.13.6, but it won't let me run Adobe Premiere CS5.

Sadly, in all my Mac years no one ever told me I could do that. It would've saved me a lot of upgrade money when a new OS didn't work with my audio software (especially WAVES plugins which I paid lots of money for and it became obsolete, since WAVES too is on a cloud-based-pay-to-play model)

Hope this helps.