If you are e-mailing about anything related to a fully registered (paid for) version, please include game name and as much detail about the problem as you can.

Our support e-mail address is: support@screamingduck.com

While we do our best to make games compatible with as many computers as possible, It is quite difficult to check against computers that didn't exist at the time of development. If you have bought a new computer or operating system upgrade and you find a game no longer works, try using Windows compatibility mode. Details from microsoft can be found here