I'm testing your great plugin with Virtue Premium Theme and qTranslate+Qtranslate Slug.
I succeed to translate pretty all things except Attributes and second problem I set different pictures for some variations and they not change in frontend.
How you can clearly see neither hard coding [:it] etc. which usually works with other ecommerce plugin.
Can you check it please, at this link?
In case, I can supply via mail data to admin enter.
Looking forward to hearing from you