[SOLVED] Multilingual store problems after upgrade to 2.0.22c

[vis18neu]

We upgraded all our stores to VM 2.0.22c, they're all on Joomla 2.5.14.
All sites/shops published in only one language are working without problem, but in our multilingual store (3 languages) we cannot add products to cart anymore. When we try to add them, there's no error message or popup window confirming purchase, we are taken directly to the cart page, which shows empty cart. Cart module also does not register any purchase/product. So - no popup following Add to cart action, and no purchase possible after upgrade on multilingual VM store. What do we need to adjust?

[vis18neu]

I've upgraded to VM 2.0.22d as suggested by jenkinhill. Intially, the problem was still here, but after I logged in and logged out in Frontend, everything started to work properly - popup shows, items can be ordered.