CS4 was untested and unsupported under Mavericks. If you used migration assistant, you should uninstall, run the cleaner tools and reinstall.
If you use the original media and still can’t get it working, I’m afraid you’re on your own.
thanks bob, i did do a clean install.
really not a solution at all? my software is now useless?
You can’t just buy a new computer without thinking about the software you’re using.
Your best bet is move to Creative Cloud. Beyond that you could buy CS6 but you’ll pay full price for it and still be two versions out of date.
i have creative cloud on my MacBook Pro too.
the problem is that i have an older imac running CS3 because i can't upgrade it beyond that w/o having to buy a new desktop computer. so i bought CS4 to use on my other mac to be able to save the file down to CS3 to continue using my desktop. it was meant to be a workaround ...
Why not install CS4 on that machine then?
Work in a Dropbox folder and when you need to get those files back to CS3 open it on the other machine.
That said, CS3 is 7 versions behind CC2014. I’m not so sure I’d want to be saving back that far.