This is a usual result when running a cracked version of Modul8 in that case you have to wear a silly hat and never ask again. If not:
1) The obvious question: Are you on-line?
2) Try quitting Modul8 and trash the preference files and launch M8 again and see if it works. The files are found in ~/[your user name]/Library/Preferences/ (note that "Library" is most likely called something else if you're on a non-english system). The files start with "com.GarageCUBE".
If you're on Lion the Library folder could be hidden. Use any of these two tricks to navigate to the Preference folder:
http://finerthings.in/mac/lion-library-folder-visible3) Email support and they will help you.