Probably not a memory problem unless there is a defect memory. Im using 1Gb myself and I have had no problems even if using several 4096*4096 bitmaps at the same time. The advices to try another format is something you should try.(don't matter if you use .jpg,.tga or .tif, just try something else) Even if that works it might still be interesting to know if you could get a bmp to work. If you have Photoshop or something similar try to open it up, make sure the image is in rgb mode and not in some kind of indexed color mode and then save it back again while making sure you select the correct settings, then give it a new try.