Quote Originally Posted by lat9 View Post
Some of your Configuration :: Sessions settings are different from the default values.

Session Directory /tmp ... this is set by default to the file-system path to the site's /cache directory, e.g. /home/yoursite/public_html/cache
Cookie Domain True
Force Cookie Use True ... Should be False, unless needed
Check SSL Session ID False
Check User Agent True ... Should be False, unless needed
Check IP Address False
Prevent Spider Sessions True
Recreate Session True
IP to Host Conversion Status true
Use root path for cookie path False
Add period prefix to cookie domain True

Try changing those configuration settings and see if that helps.
Ok,Thanks,i have did it,but the cart don't upgrade when add some products to cart.