You should direct your important message to Adobe representatives. This is a user to user forum (provided by Adobe) and we are just fellow users of the software. We cannot acknowledge or act on your message because we aren't Adobe staff. Best of luck.
you insist on my providing the activation number of an earlier version.
I have done so, but you don't accept it.
Providing the serial number from an earlier version is a normal requirement when reinstalling software which was an upgrade from an earlier version.
Are you certain that you are providing a valid serial number (do not post the serial number here) for the earlier version?
Valid upgrades for CS5 were CS2 through to CS4. Your earlier version serial number should be 24 digits, no alpha characters.
What is the error message you receive?
Yes, I provided the number for the earlier version.
I have received an error message: "There was an error opening this file by the appropriate program.
Please try again later (which I did) free some memory or restart your computer.
Also: The archive is missing at the following loaction: "C:\Users\MikeWin7\Desktop\Photoshop_12_LS1.7z".
I have got it working, thanks.