Reinstalled CS4 and the whole suit is working again...
I think that the key to your problems was the note at the bottom of your post ... Curiously this morning the Imac was with problems and had to use disk utility, etc...
The licensing mechanism for the Creative Suite applications depends upon a number of configuration files, one or more of which may have been affected (lost, modified, etc.) by the problems that you had to use the disk utility to resolve.
Yes. absolutely, the relation could be sustained. For this reason I mentioned the crash.
Simply I unplugged the Imac for 15 seconds and restarted (as the disk utility did not reported any damage and these procedures had been already made two weeks ago.
What was interesting is that the AAM failed to continue the register, always omitting the second step.
Looping and looping and resisting to mount the serials-window step.
And I am not clear if CS4 re-installation was a solution, although after this procedure was exerted, the Suite ignited on.
Thank you. I think it was a situation very complicated, completely unknown in many many years with Adobe and Apple.