This is a nightmare. After the upgrade from 2.0.10.k5 to 2.0.12, I lost half of paid extensions. No support here. I also bought rashireniem Virtuemart developers, there is also no support until perevedesh everything from Russian to English and to try to convey to the brain, then he begins to boil. I even changed the hosting and installed from scratch on a new Joomla shop, still error. So understand that the developer speshitpillts left, and the rest can not deal with their wisdom.