I bought Creative Cloud and I can't install Illustrator without a seriel number. I don't have a record of it anywhere.
Good luck solving this...
I ended up having to uninstall all applications, and then use the adobe clean up tool, and then re-install, this did not help though, as I didn't know you can't open a previous version of an application, as the next time you launch a CS6 application, it gives you the trial has run out message error, and then you have to uninstall and re-install again. Ever since I stopped opening older versions, which I sometimes use for 3rd party plug ins that haven't been upgraded to CS6 yet, the problem has not re-occured.
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