error in "Login or create a new account"

Hi
I get the following falat error:
Object of class stdClass could not be converted to string in /mounted-storage/home143/sub028/sc76855-CMTT/agrilob.com/daphna/templates/yougrids/yjsgcore/yjsg_core.php on line 18
It happens both on Joomla 1.5 and 1.6
As you see I am using yougrids template.
Can anyone help?
I am attaching the file where the problem happened, maybe this can help

Thanks for any help
Daphna Levin

Hi,

This problem is in your template, not in HikaShop. you should ask your template provider for help regarding that matter.