Hi Costas - thanks for reporting this, it sounds like it is video card related.

There was a change in the last beta to how textures were used on the video card to try and reduce the amount of memory used. Maybe that is not working well with your video card.

Can you please try editing your moi.ini file to change a setting that will revert it back to the old texture method, to see if that solves your problem?

To do this, run Notepad.exe and then open the moi.ini file which on Vista can be found here:
C:\Users\ [your user name] \AppData\Roaming\Moi\moi.ini

Go to the [View] section, and inside there look for an entry named "ForcePow2Textures" - if you don't have one under there add it as a new line, and set it like this:

[View]
ForcePow2Textures=y


Can you run with that set to y and let me know if it seems to solve your problem?

Thanks,
- Michael