Bug virtuemart 1.1.2 with Joomla-SMF Forum

[Luciffere]

Bug virtuemart 1.1.2 with Joomla-SMF Forum from JoomlaHacks.com. When i do patch to joomla index.php, the cart of the virtuemart show: Empty cart... If i un-patch the index.php from Joomla... the products appear in the cart...
I use joomla 1.0.15
Viruemart 1.1.2
Version Information:
Your Joomla version is: 1.0.15
Your SMF version is: 1.1.5
Your Joomla-SMF version: 2.0.2.1