CS6 beta expired, now CS4 won't start

[coholmes]

I had Photoshop CS4 installed on my Mac, then installed Photoshop CS6 beta and uninstalled it after its trial expired. Unfortunately, CS4 now reports "license expired" at start, and then quits. I have my CS4 serial number but I don't know where to get its installer. I'd appreciate any help.

[Mylenium]

Adobe Forums: FAQ: How do I uninstall the Photoshop CS6 beta?

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Mylenium