Topic: New pictures won't add to Tilt Viewer

Is there a limit to the amount of pictures that can be added? I added 2 new images and they dont show up in the index file on a browser. I then went back to the XML file and rearranged the order of pics, brough the new ones to the middle of the list. and still, they wont show up in browser. what am i doing wrong? i never had a problem adding pictures before.