Add to cart error

[kodyxgen]

Hi,
i have the last wersion of Vm and Joomla 2.5 but on the product detail page when i push the add to cart button i am getting this error in the console:
TypeError: Cannot read property 'stat' of null

I don't know way the string that is returned is null, can someone help me please.

Thank you

[GJC Web Design]

You must have some sort of JS error/conflict - without a live url very unlikely anyone can help