MSXCast compatibility problems...?

Hi all,

I downloaded an image of the MSXCast emulator complete with ROMs. But now I can't seem to get a lot of games running...
Am I doing something wrong or is the compatibility just horrible?
The emu keeps hanging on the empty blue screen after the MSX logo comes up. What causes this?

Games I tried that worked:
Penguin Egg
Hang On
Zoom 909

Games I tried that didn't work:
Knightmare
King's Valley II
Treasure of Usas
Maze of Galious
Metal Gear
Penguin Adventure

MSXCast currently is in a WIP status so there is a chance that it doesn't play all existing MSX/2 games.

http://www.dreamcast-scene.com/index.php/Main/MSXCast

It's also possible that the image you've downloaded doesn't contain the proper BIOS files for certain MSX variants. Please avoid to mention your downloaded Warez here at DCEmu UK in the future.

Ah ok sorry about that... :S
I'll look into it. Thanks for replying!