Yo, so im tryin to edit this theme from studiopress and all i want to do is switch the theme picture in the top left corner with mine. I saved the file as a .png through fireworks just like the original image. It is the exact size and named the same as the original as well. But when i re-zip the file and upload it to wordpress the theme goes bonkers and wont work. I cant quite tell if there is code within the original image. Anyone know what im missing here?