Apple notes that some Adobe applications may need to be re-activated after performing an Archive and Install process.
Knowledge Base document #304418 links to an Adobe support document, which states:
"You may be prompted to reactivate in the following circumstances: You used the Archive and Install function of OS X to upgrade from one version of OS X to another. For example from Mac OS X v10.3.x to v10.4; You reinstalled OS X or reformatted the hard disk."
For more information on activation, visit the Adobe website at http://www.adobe.com/activation. For a list of phone numbers for the 24-hour automated Activation Voice Response system, visit the Adobe website at http://www.adobe.com/activation/phonenumbers.html.