Recently DragonsLover told me about some problem with KeeperFX launcher, so I've prepared an updated version.
Hope this one will work. To use it, just replace the original launcher executable with the one from this archive:
keeperfx_launcher-0_41_beta2.zip
This version has a working "Settings" and "Run options" screens.
A bit older version:
keeperfx_launcher-0_41_beta1.zip