Fehlermeldung bei Registrierung

Hallo,

nach dem Update auf Version 5.2.12 erhalten wir im Log folgenden Fehler, wenn sich ein neuer Kunde registrieren lassen will:

[2017-01-03 15:36:57] core.ERROR: exception ‚PDOException‘ with message 'SQLSTATE[23000]: Integrity constraint violation: 1048 Column ‚isnew‘ cannot be null’ in /var/www/vhosts/protact.net/httpdocs/vendor/doctrine/dbal/lib/Doctrine/DBAL/Statement.php:165 Stack trace: #0 /var/www/vhosts/protact.net/httpdocs/vendor/doctrine/dbal/lib/Doctrine/DBAL/Statement.php(165): PDOStatement->execute(NULL) #1 /var/www/vhosts/protact.net/httpdocs/engine/Library/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(281): Doctrine\DBAL\Statement->execute() #2 /var/www/vhosts/protact.net/httpdocs/vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php(1018): Doctrine\ORM\Persisters\Entity\BasicEntityPersister->executeInserts() #3 /var/www/vhosts/protact.net/httpdocs/vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php(378): Doctrine\ORM\UnitOfWork->executeInserts(Object(Doctrine\ORM\Mapping\ClassMetadata)) #4 /var/www/vhosts/protact.net/httpdocs/vendor/doctrine/orm/lib/Doctrine/ORM/EntityManager.php(356): Doctrine\ORM\UnitOfWork->commit(Object(Shopware\Models\Customer\Customer)) #5 /var/www/vhosts/protact.net/httpdocs/engine/Shopware/Bundle/AccountBundle/Service/RegisterService.php(218): Doctrine\ORM\EntityManager->flush(Object(Shopware\Models\Customer\Customer)) #6 /var/www/vhosts/protact.net/httpdocs/engine/Shopware/Bundle/AccountBundle/Service/RegisterService.php(120): Shopware\Bundle\AccountBundle\Service\RegisterService->saveCustomer(Object(Shopware\Bundle\StoreFrontBundle\Struct\Shop), Object(Shopware\Models\Customer\Customer)) #7 /var/www/vhosts/protact.net/httpdocs/engine/Shopware/Controllers/Frontend/Register.php(162): Shopware\Bundle\AccountBundle\Service\RegisterService->register(Object(Shopware\Bundle\StoreFrontBundle\Struct\Shop), Object(Shopware\Models\Customer\Customer), Object(Shopware\Models\Customer\Address), NULL) #8 /var/www/vhosts/protact.net/httpdocs/engine/Library/Enlight/Controller/Action.php(159): Shopware_Controllers_Frontend_Register->saveRegisterAction() #9 /var/www/vhosts/protact.net/httpdocs/engine/Library/Enlight/Controller/Dispatcher/Default.php(523): Enlight_Controller_Action->dispatch(‚saveRegisterAct…‘) #10 /var/www/vhosts/protact.net/httpdocs/engine/Library/Enlight/Controller/Front.php(223): Enlight_Controller_Dispatcher_Default->dispatch(Object(Enlight_Controller_Request_RequestHttp), Object(Enlight_Controller_Response_ResponseHttp)) #11 /var/www/vhosts/protact.net/httpdocs/engine/Shopware/Kernel.php(178): Enlight_Controller_Front->dispatch() #12 /var/www/vhosts/protact.net/httpdocs/vendor/symfony/http-kernel/HttpCache/HttpCache.php(487): Shopware\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #13 /var/www/vhosts/protact.net/httpdocs/engine/Shopware/Components/HttpCache/AppCache.php(255): Symfony\Component\HttpKernel\HttpCache\HttpCache->forward(Object(Symfony\Component\HttpFoundation\Request),