500 error from virtuemart products module

[pm4698]

Hello there,

Joomla 2.5.28
Virtuemart 2.6.20
link: http://tinyurl.com/hljrxrs

If you go from frontpage at bottom and try adding product to cart and then go to cart, product is not added to cart

Now if you open Console from inspection tools, when red button clicked to add to cart you get a 500 (Internal Server Error) message.

Any ideas?

P.S. I tried to upgrade also to vm3 latest version but this issue remains. I also try to remove my override and still the same

[GJC Web Design]

seems template related

the JS error is to do with minicart

minicart_ajax:1
option:com_virtuemart
minicart_task:refresh
minicart_modid:249
view:cart

try unpublishing it