When ive changed the width of a sprite, making it bigger, all the sprites go weird when i start the game. Changing the height is no problem though - sprites can be as tall as i want them to be.
What am i doing wrong? Offcourse i changed the seize of the transparency mask and bounding rectangle to have the same width, so that's not it.
Is this a known problem? Or am i just doing something very wrong here?
It is a known behaviour - You have to make the widths of the sprites a multiple of 24 - that is, each of the three small images has to be multiple of 8 wide. I'm not sure if there are similar issues with other types of images, but the readme has info on that, too.
Yes, each bitmap must be a multiple of 8 pixels wide also.
If you're using ModKeen 2, it will check this and issue an error if one of your .bmp files is the wrong width.