Errors in products

-- HikaShop version -- : HikaShop Starter 2.1.0
-- Joomla version -- : 3.3.0
-- Error-message(debug-mod must be tuned on) -- : Error_message

When in the back end of hika shop in a product, in the Product available from and Product available until sections have the below error:

Warning: Illegal string offset 'class' in /homepages/14/d424003934/htdocs/MajorVibe/libraries/cms/html/html.php on line 965

Warning: Illegal string offset 'class' in /homepages/14/d424003934/htdocs/MajorVibe/libraries/cms/html/html.php on line 966

Also, when linking a product to a k2 article, it comes up with this error (screen shot attached).

Warning: Creating default object from empty value in /homepages/14/d424003934/htdocs/MajorVibe/plugins/system/customhikashopproductinsert/customhikashopproductinsert.php on line 103

got any ideas for a solution?

Thanks

Hello,
Can you download the last Hikashop version through our website, Install it and test it again ?
Thanks.

Hi thanks for your reply.

I have updated to latest version.

The errors in the products in the backend have gone. still got the error in the front end though.

Warning: Creating default object from empty value in /homepages/14/d424003934/htdocs/MajorVibe/plugins/system/customhikashopproductinsert/customhikashopproductinsert.php on line 103

Thanks for your help

Hello,
I think that the problem is coming from the fact that you've done some modification through the "hikashopproductinsert" plugin.
Can you use the "hikashopproductinsert" plugin instead of the "customhikashopproductinsert" plugin ?