I have tried many shopping carts for Joomla and MijoShop is the best of the best, hands down.
Works great right out of the box! MijoShop has tons of options and features and its built off of the OpenCart platform so there are already 1000's of extensions you can use.
The support is great and very fast, usually next day or even same day answers for support tickets. They have already released numerous updates so you know they are serious about this extension.
Great job MijoShop!
Other than that, works great as a stand alone player but i wish i knew what was causing the problem.