Empty cart popup window

Hi, please help with problem.
The VM module Cart is enabled in the cart position.
But when I click on the cart (wich is not empty = filled with products) link, black EMPTY popup shows up (no css issue).
BikeStore is not the default template!, but the secondary(assigned to menus), the site is multilang.
I created quickinstall on localhost for testing, it looks like it works, but when I sets to default joomla beez template, and bikestore unnasign for ex. the home link (other lets have checked), and if you go to product layout, where is the bikestore template works,adds product to the cart, click the cart link, voala... empty popup.
Sum: you can replicate the problem, do quick install. After that select another template to default, unassign bikestore template for home link. Go to products (there is bikestore template, because you unassigned only for one menu = Home), add product, click on cart link, the result is empty link.
Please give me advice!
PS: the site is in localhost, and cant be tested on live, before everything doesnt work on eshop. Thank you.

Sorry, but as far as the site is not available online we can't help much. Perhaps you have changed some configuration, maybe some override.css is messing with html displaying. Try undo all recent changes and do them one by one to find the cause.

You can replicate the problem with your 2.5 joomla QuickInstallDemo BikeStore as I described above! The QuickInstall doesnt works too ...
Please help

Well... Its not 100% bug. The cart (as few other things) is assigned to template and is being called with ajax from menu link. If you change homepage template to another - those ajax calls can't get their data - as different template just doesn't have correct files and functions - so ajax call returns empty popup.
So there are 2 options - either use BikeStore also on homepage and everything should work fine, or change the link co "My Cart" to standard VM cart/checkout page - then it should reload page pointing to existing cart.

If you are on menu item which use BikeStore template (100%), for ex. product display layout, adds product, then click on cart link, then the popup is empty.
Option 1. = I dont want to use BikeStore template to every menu item, I wants it only for shop. Assigning templates to menu items is a basic feature of joomla 2.5. Really I want the bikestore template only for e=shop section.
Option 2. = I think it should not be option because the popup- showing items in cart is a nice feature of template which I bought - payed for.

Please give me solution for this problem! Btw I searched across the forum , and many posts have same content as this problem, but I didnt find solution.

Thank you again

There is no solution for this other than those I provided before.
Sadly - the cart popup depends on homepage template features, and if homepage doesn't use BikeStore - those features simply will not work.