I would like to inform you that you can install and activate Creative Cloud desktop applications on two computers, regardless of operating system, for the individual associated with the Creative Cloud membership.
If you have already used CC on two machines then please folllow the steps mentioned below.
1) Start the application and sign in when prompted
2) Choose Help > Deactivate.
Please refer to http://helpx.adobe.com/x-productkb/policy-pricing/activation-deactivation-products.html#ac tivate-problem for more info.