What exactly are you referring to? CS 3? If so, then it's simply not compatible with current versions of OS X.
Of course, I should have said I'm running El Capitan 10.11.6, hoping to run AE CS3
Many thanks for the comment, and you may well be right. I first tried Adobe Chat contact, sent them a screen shot, but they appear stuck and suggested this forum. But Adobe told me they've checked the license number and CS3 on 10.11.6 should be OK. It's also what some www. comment seems to suggest. (I'm no computer magician myself).
However there are obviously issues with this combination. So any more suggestions would be welcome before I cave in and fork out.
CS3 is version 8, not version10. That would be CS5, AE's first 64-bit version.
I wish you luck in getting it to work, but I hold out almost no hope. You're trying to run an 8-year-old, 32-bit application on a year-old, 64-bit OS. I'll bet you can appreciate the discrepancies.
Thanks Mylenium and Dave. A surprise! AE CS3 (you're right Dave, version 8) is running apparently successfully on El Capitan! For now. The box that comes up is the registration box, and I managed to get it to show text sometimes by opening the one AE function it will let run behind it, After Effects Services/Services preferences. After that's been just opened, for some reason text sometimes appears in the box. It's the standard registration box. But when I click on "activate", I get (as others in other forums have experienced), a message saying "We are unable to connect to Adobe to register your product". I've tried all the stunts I found suggested on other sites, I've checked all the numbers on the AE carton and my Adobe a/c, and deactivated successfully an installation on an old machine. No change. Adobe Chat Help's solution? Just click on "never register"!
I've tried all the stunts I found suggested on other sites, I've checked all the numbers on the AE carton and my Adobe a/c, and deactivated successfully an installation on an old machine. No change. Adobe Chat Help's solution? Just click on "never register"!
Well, you could TRY running it without registering to see what happens, but I think you'll end up re-installing it on the older machine. I suspect the differences are just too great.