zikula / core

                throw new \RuntimeException($this->translator->__f('Error! Not allowed to upgrade %s.', ['%s' => $extension->getDisplayname()]));

                break;

            default:

                if ($extension->getState() > 10) {

                    throw new \RuntimeException($this->translator->__f('Error! %s is not compatible with this version of Zikula.', ['%s' => $extension->getDisplayname()]));

                }

        }

        if ($extension->getType() == self::TYPE_SYSTEM) {

            || ($extension->getType() == self::TYPE_SYSTEM && $extension->getName() != 'ZikulaPageLockModule')) {

            throw new \RuntimeException($this->translator->__f('Error! No permission to uninstall %s.', ['%s' => $extension->getDisplayname()]));

        }

        if ($extension->getState() == ExtensionApi::STATE_UNINITIALISED) {

            throw new \RuntimeException($this->translator->__f('Error! %s is not yet installed, therefore it cannot be uninstalled.', ['%s' => $extension->getDisplayname()]));

        }

        // allow event to prevent extension removal

        $vetoEvent = new GenericEvent($extension);