Hi All, I have just completed the upgrade and have run into a couple of problems: (1) I have a plugin from postloop which now doesn't work. When I go to the postloop website and click to enable my site, I get the error message "Unable to validate postloop.php". All the files are there and all the permissions seem OK. Postloop say the plugin works fine with 1.2, so I am stumped. (2) In trying to solve the above, I uninstalled all my other add-ons. Now when I try and re-install one called "Ad Manager", I get the following error message: Server Error Mysqli statement execute error : Table 'merc_ad' already exists Zend_Db_Statement_Mysqli->_execute() in Zend/Db/Statement.php at line 297 Zend_Db_Statement->execute() in Zend/Db/Adapter/Abstract.php at line 479 Zend_Db_Adapter_Abstract->query() in Merc/AdManager/Installer.php at line 19 Merc_AdManager_Installer->_installVersion1() in XenPlus/Installer.php at line 133 XenPlus_Installer->_callVersionMethod() in XenPlus/Installer.php at line 80 XenPlus_Installer->runInstall() in XenPlus/Installer.php at line 34 XenPlus_Installer::install() 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 187 XenForo_ControllerAdmin_AddOn->actionInstall() in XenForo/FrontController.php at line 337 XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134 XenForo_FrontController->run() in /websites/123reg/LinuxPackage22/fo/ra/_c/fora.co.uk/public_html/admin.php at line 13 I have only just started using the software and have next to no knowledge about how to go about fixing these problems. Any help would be greatly appreciated.