Fatal error while loading a LUA script

[whynot]

\client\start scripts\init.lua [string "savedirectory = GetSaveDirectory()..."]: 100 error in function 'StartKeeEngine'
argument #1 is nil; 'number' expected

This is when I start the demo from the launcher.

[zeussy]

If you havn't managed to fix it yet. Try going into the options section within the launcher. And make sure everything is set (especially the resolution option). That should fix it up.