Hi there -
The Adobe licensing agreement allows you to install the same Adobe application on up to two computers, as long as the application does not run simulaneously on both. See this FAQ page for more information: http://helpx.adobe.com/x-productkb/policy-pricing/end-user-license-agreements-faq.html#mai n_Can_I_use_my_software_on_two_computers_
(Moved from the PS Beginners forum to the Adobe Licensing forum)
I have Adobe Photoshop CS4 Extended and have got a new PC - I have installed in fine but it says "The serial number you have entered is not valid. Click OK to try re entering it." I have de-activated the programme on my old PC and tried the serial number on that and it works fine on that but not on the new PC - I am going insane. PLEASE HELP!!!!
Hi Joff, it sounds like you followed the instructions for how to move your software, but that your product activation didn't get reset on your old system for some reason...
Sometimes a small hardware change can cause this to happen too.
But it's out of the power for anyone here to modify, and something only Adobe customer service can help with – so try contacting them directly: