Bitmap size Illegal (RM2K)

[Thep]

For some reason, when I try to inport certain monster sprites into RPG Maker 2000, it tells me that the size of the bitmap is illegal.  I've corrected the color depth andeverything, so I don't know what the problem is.   I have also imported images of largers dimensions and file size than the ones I'm trying to import. Thanks in advance!

[yaeyae]

Just a guess, but maybe you could try saving it as a .png?

[Kathryn]

How big are the monsters that you make?

please keep in mind that the screen is 320 x 240 pixels big, so monsters will have to be pretty small.