Are you using a 64bit Operating System?
Premiere / After Effects CC are 64bit only.
This is a user to user forum, not Adobe support... you might want to contact Adobe
Adobe contact information - http://helpx.adobe.com/contact.html
Help for Download & Install & Setup & Activation http://forums.adobe.com/community/download_install_setup
Next link has a "Chat Now" button near the bottom http://helpx.adobe.com/x-productkb/policy-pricing/activation-deactivation-products.html