Prestashop 16 ajax request with ? 'question mark' on begin cause error - e.g ajax cart error

[bumerang07]

I've shop on Prestashop 1.6 that was working till i have install Google Analytics module - this is my supposed. Now every ajax request beginning with ? is causing errors. It's look like the server could not find out what is this request for. When I remove ? it works fine. Does anyone have the same problem? Found a solution?

For ajax cart it gives error like:

Impossible to add the product to the cart.
textStatus: 'error'
errorThrown: 'Not Found'
responseText:

There is no point in changing all ? on all ajax calls from JS.

I've uninstall google module but the problem was still there.

[NemoPS]

Can you share the site's url? Do you have any other url related module?