You would follow the instructions for OS 10.7 and above.
Open Terminal.app (Spotlight will dog that up for you)
Type sudo and <space> at the command prompt.
Drag the python (.py) script into the Terminal window and press enter. Type your password if asked.
CS4 should then work
If not, reinstall. You'll need your serial number and if you don't have your discs, get back to me.
I figured out the whole python (.py) script thingy and where it was located. Tried the process several times, following the instructions listed on the Terminal.app window; still get the same message.
Not sure at this point if I downloaded the PS4 software or if I have the discs lying around somewhere--it's been quite a while! If I can't come up with discs and a serial number, am I scr**ed??
You can download the CS4 installer here: Download CS4 products
The serial number should be on your Mac, because all you did was an upgrade, you did not wipe the drive. That means you should simply be able to install it without it asking for the serial.
Also if you registered CS4 with Adobe, your serial number is kept under your account under "My Products". Adobe ID
I found my original Adobe packaging with discs and serial number! I'm downloading CS4 now, and at least will have the serial number to provide if required.
I'm hoping this will work, and I don't see why it wouldn't.
Thank you SO much for contributing your advice and help! I really appreciate it.
Arrgh! My PS4 software is an UPGRADE, and my Mac is asking me for the serial number of a previous version. I upgraded from CS, and I can't open that app on my computer because "Power PC applications are no longer supported". That was so long ago I have no idea where THAT serial number might have gone.
You call Adobe Customer Service and explain you cannot get your previous serial number and they can try a "Challenge Code" to unlock your product.
or use a key finder.
There's a free and pro version. The locked pro version will at least show the first four digits before you buy it.
Yeah, one of my issues is that I cannot connect to any human at Adobe, even having tried dozens of times to navigate through their phone tree system.
I tried the Mac Product Key Finder, but it can only locate my PS4 version, even though I see PSCS on my hard drive...
At this point you will have to contact Customer Care.
You can try their chat feature, or if you want to call them and they are busy, take their "callback" option where they will call you back when your turn is next.
I'm a volunteer user and only Adobe Customer Service can fix serial numbers.