array_merge() [function.array-merge]: Argument #1 is not an array
XenForo_Application::handlePhpError()
array_merge() in BBM/ControllerAdmin/Buttons.php at line 288
BBM_ControllerAdmin_Buttons->actionPostConfig() in XenForo/FrontController.php at line 337
XenForo_FrontController->dispatch() in...