First, thanks a lot for this great add-on. It's working great on my quite heavily modified OSC 2.2 store.
I'm using the multilanguage option. My main language is French, and the secondary one German.
When I call /usu5_sitemaps/index.php the sitemap files are generated seemingly as they should: one set of files in French and one set with the _german suffix. HOWEVER, the URLs for the German files are created using the categories/products names in French, not in German. The /de/ part is correctly added. So the URLs are working, but producing a 301 redirect, a big no-no in a sitemap.
I've seen in the code that the initiate method has a force_language option, which is used in the sitemap generation code. Yet the strings for the default language are still being used for the secondary language.
Is it a bug? Am I missing something?
Thank you for any pointer and, again, thank you for your time and dedication to this very helpful mod.