[Plugin: Udinra All Image Sitemap] Is there a way to exclude post which creating error?

The fact is that their is a part of my site that is private, and your pluging is mapping this part resulting as an error.

http://www.tvqc.com/sitemap-image.xml

post_type=sympatico is a special private feed for one of my customer (those posts are not posted on my site, but on another site)

so is there a way to excude this site part from the images sitemap?

http://wordpress.org/extend/plugins/udinra-all-image-sitemap/