ERROR AFTER UPGRADE FROM 3.0.2

I am getting this Error when l try to access Extension Manager

Catchable fatal error: Argument 2 passed to JAdapterInstance::__construct() must be an instance of JDatabaseDriver, instance of ShlDbClass given, called in /home/flexpeac/public_html/administrator/components/com_sh404sef/classes/baseinstalladapter.php on line 54 and defined in /public_html/libraries/joomla/base/adapterinstance.php on line 46

I NEED HELP AS SOON AS POSSIBLE

Hi,
did you read those tips (before): http://www.gavick.com/documentation/gen ... -2-safely/

You have to upgrade your sh404sef component, I guess. Because installed version is not fully compatible with J3.2. I hope that is not too late.