help with bitmaps

Hello...

Im making a script that uses bitmaps.

One question, after you log in and out..do you have to update the bitmaps or somthing??...The script works fine, but after a while...a few times of logging in and out..my bitmaps do not work unless i make new ones..

Is that normal?...do i have to use scarscape or something so the colors are the same every time i log in..or does that not effect bitmaps?

Thanks.