I'm having trouble deactivating my key on my old computer and transferring it to a new computer. Running the prlsrvctl command gives me the error message: "Failed to activate the license: Unable to confirm the product license. Please activate the product first.". Trying to activate through the regular UI gives me the message "You have reached the maximum number of activation available for your activation key (http://www.parallels.com/eula). Please purchase a new product license." I have signed out on my old computer and uninstalled the application. How can I activate on my new computer?