I've encountered this annoying bug of some sort which goes like this:
Whenever I set the game resolution so that the game resolution wouldn't match my desktop's resolution, the game resolution turns back to 640x420.
For example, now my desktop is 1600x1200. Whenever I set my Raven Shield game resolution to other than that resolution, the game resolution would automatically turn into 640x420. However, when the desktop and the game's resolutions are the same, just stays at whatever I setted it to. I have ATI Radeon 9700. Can someone help me out?