Ok, sorry. I chose her is addon for creating events that is very useful for my forum.
I tried to upgrade to "Social Groups (Teams) 2.0.0c" but still gives me this error.
Code:
Mysqli prepare error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'INDEX end_date (end_date) ) ENGINE = InnoDB CHARACTER SET utf8 COLLATE utf8_g' at line 11
Zend_Db_Statement_Mysqli->_prepare() in Zend/Db/Statement.php at line 115
Zend_Db_Statement->__construct() in Zend/Db/Adapter/Mysqli.php at line 381
Zend_Db_Adapter_Mysqli->prepare() in Zend/Db/Adapter/Abstract.php at line 478
Zend_Db_Adapter_Abstract->query() in Nobita/Teams/Installer.php at line 313
Nobita_Teams_Installer::install()
call_user_func() in XenForo/Model/AddOn.php at line 215
XenForo_Model_AddOn->installAddOnXml() in XenForo/Model/AddOn.php at line 169
XenForo_Model_AddOn->installAddOnXmlFromFile() in XenForo/ControllerAdmin/AddOn.php at line 236
XenForo_ControllerAdmin_AddOn->actionUpgrade() in XenForo/FrontController.php at line 347
XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
XenForo_FrontController->run() in /home/gbbyhpma/public_html/admin.php at line 13