Cannot add to cart after update to 2.0.268

[ee61ny@.....com]

Hello, after last update of OPC, version 2.0.268, I cannot add product to cart. My site is https://www/growmarket.gr/bak , I am usinng J2.5.27, Virtuemart 2.6.12.2.
With fancy box enabled, loader loads for ever, whereas with fancy box enabled, there is no reaction at all and nothing is added to the cart. In firebug, error is with the folllowing file :
Χρονοσήμανση: 26/11/2014 4:00:27 πμ
Σφάλμα: TypeError: datas is null
Kώδικας: https://www.growmarket.gr/bak/component ... on:%208558
Γραμμή: 67

Hope this helps.

cc. Is there any tutorial about how to downgrade to last working version in case something goes wrong with update ?
Thanks in advance,
Nikos

[admin]

hello, i am sorry, but i cannot find an "add to cart" button on you site, i see only the compare buttons. can you pls send me a screenshot on how it looks and a link to a product?
best regards, stan

[ee61ny@.....com]

Hello, I have add to cart button only in product view, for example
https://www.growmarket.gr/bak/kalliergh ... oyo-detail

the add to cart is ΣΤΟ ΚΑΛΑΘΙ.

I keep having the error Class 'OPCloader not found in file ... /components/com_onepage/helpers/renderer.php.
Thanks, Nikos'

[admin]

Hello Nikos,

this is related to the error reported here:
viewtopic.php?f=5&t=1055

both issues:
- payment display + the error

are fixed within the newly released opc 2.0.270

thank you for reporting this.

best regards, stan