Failed – images skipped

hi
when i generate a sitemap, every image (JPG) is "failed" because in sitemap tool it ends with %20

example

http://www.levant.it/public/imgprodo…)_thumb.jpg%20

Every images ends with "%20"

i think it’s a problem of sitemap generato, becuase in my site i have no problem to seem them

if u want to try this is the site: http://www.levant.it/index.asp