2014-09-30, 10:07:34
I didn't see it documented anywhere, but you need to have the basic I18N plugin installed and activated in order for the breadcrumbs (and the rest of the theme after the breadcrumbs) to work correctly.
http://get-simple.info/extend/plugin/i18n/69/
http://get-simple.info/extend/plugin/i18n/69/