I wanted to upload my texture as a BMP file but a message appears and says "Make sure its the right file and something else I can't remeber" :O

(The part where I said "and something else I can't remeber" was added by me because I couldn't remember what else was in that part.)

Try saving as .JPG
is it a good file size? 128x128

The texture size used by Toribash is 128x128, so it's good habit to upload in that size. Yeah, simple fix save your files in a different format. .GIF .JPG .PNG .TGA .TIF.

I'm honestly not sure, why it wouldn't accept .BMPs in the meantime I would just go with a different format.

Alright.

Sometimes they dont work.
Try .tga first and if that wont work then .jpg will work.

Okey, but I rather stick with the JPEG files instead. I only wanted to try BMP files.
Thanks for the help though.