before you write a support ticket, please note that this plugin is only an extension of http://wordpress.org/plugins/google-sitemap-generator/ - it adds qTranslate support.
If you have any issues with this plugin, please try the original plugin first and if the problem persists, ask there for support. The original plugin will only include base links without language info in your sitemap.
Example: instead of http://site.com/en/post-1 and http://site.com/de/post-1 you will only see http://site.com/post-1.
You noticed I didn't answer any support questions. I simply forgot to enable email alerts. Sorry.