When I try to add my product photo on a new item I'm trying to list, I am getting this error: How do I fix this.

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move '/tmp/phpDMObIW' to '/home/divabou/public_html/Catalog/images/TO40168SV.jpg' in /home/divabou/public_html/Catalog/admin/includes/classes
/upload.php on line 112