The latest update can be downloaded here:
https://universe.chickeninvaders.com/files/ChickenInvadersUniverseInstaller.exe
If you still receive the old version, try this link instead:
https://universe.chickeninvaders.com/files/ChickenInvadersUniverseInstaller66_1.exe
If HTTPS downloads are too slow for you, try this link instead (you may need to manually copy-paste it in your browser’s address bar):
http://universe.chickeninvaders.com/files/ChickenInvadersUniverseInstaller.exe