Ich bekomme es einfach nicht zum laufen

Hallo Leute, ich spiele mich schon seit 2 Tagen mit der Installation von Shopware 4.1.3. Anfangs dachte ich es liegt an der Server-config aber bei Schritt 2 der Installation wird mir auch angezeigt, dass ALLE Systemvoraussetzungen erfült sind (alles grün). Ich habe auch die Daten am Server schon 2 Mal hochgeladen. Trotzdem bekomme nach Ende der Installations folgende Fehlermeldung: Ups! Ein Fehler ist aufgetreten! Die nachfolgenden Hinweise sollten Ihnen weiterhelfen. Class Shopware\Models\Category\Category is not a valid entity or mapped super class. in Doctrine/ORM/Mapping/MappingException.php on line 147 Stack trace: #0 Doctrine/ORM/Mapping/Driver/AnnotationDriver.php(166): Doctrine\ORM\Mapping\MappingException::classIsNotAValidEntityOrMappedSuperClass('Shopware\Models...') #1 Doctrine/ORM/Mapping/Driver/DriverChain.php(75): Doctrine\ORM\Mapping\Driver\AnnotationDriver-\>loadMetadataForClass('Shopware\Models...', Object(Doctrine\ORM\Mapping\ClassMetadata)) #2 Doctrine/ORM/Mapping/ClassMetadataFactory.php(293): Doctrine\ORM\Mapping\Driver\DriverChain-\>loadMetadataForClass('Shopware\Models...', Object(Doctrine\ORM\Mapping\ClassMetadata)) #3 Doctrine/ORM/Mapping/ClassMetadataFactory.php(178): Doctrine\ORM\Mapping\ClassMetadataFactory-\>loadMetadata('Shopware\Models...') #4 Doctrine/ORM/EntityManager.php(269): Doctrine\ORM\Mapping\ClassMetadataFactory-\>getMetadataFor('Shopware\Models...') #5 Doctrine/ORM/UnitOfWork.php(2373): Doctrine\ORM\EntityManager-\>getClassMetadata('Shopware\Models...') #6 Doctrine/ORM/Internal/Hydration/ObjectHydrator.php(237): Doctrine\ORM\UnitOfWork-\>createEntity('Shopware\Models...', Array, Array) #7 Doctrine/ORM/Internal/Hydration/ObjectHydrator.php(477): Doctrine\ORM\Internal\Hydration\ObjectHydrator-\>\_getEntity(Array, 'shop') #8 Doctrine/ORM/Internal/Hydration/ObjectHydrator.php(150): Doctrine\ORM\Internal\Hydration\ObjectHydrator-\>hydrateRowData(Array, Array, Array) #9 Doctrine/ORM/Internal/Hydration/AbstractHydrator.php(106): Doctrine\ORM\Internal\Hydration\ObjectHydrator-\>hydrateAllData() #10 Doctrine/ORM/AbstractQuery.php(603): Doctrine\ORM\Internal\Hydration\AbstractHydrator-\>hydrateAll(Object(PDOStatement), Object(Doctrine\ORM\Query\ResultSetMapping), Array) #11 Doctrine/ORM/AbstractQuery.php(420): Doctrine\ORM\AbstractQuery-\>execute(Array, 1) #12 Shopware/Models/Shop/Repository.php(320): Doctrine\ORM\AbstractQuery-\>getResult() #13 Shopware/Plugins/Default/Core/Router/Bootstrap.php(118): Shopware\Models\Shop\Repository-\>getActiveByRequest(Object(Enlight\_Controller\_Request\_RequestHttp)) #14 Enlight/Event/Handler/Plugin.php(149): Shopware\_Plugins\_Core\_Router\_Bootstrap-\>onRouteStartup(Object(Enlight\_Controller\_EventArgs)) #15 Enlight/Event/EventManager.php(165): Enlight\_Event\_Handler\_Plugin-\>execute(Object(Enlight\_Controller\_EventArgs)) #16 Enlight/Controller/Front.php(155): Enlight\_Event\_EventManager-\>notify('Enlight\_Control...', Object(Enlight\_Controller\_EventArgs)) #17 Shopware/Components/HttpCache/HttpKernel.php(79): Enlight\_Controller\_Front-\>dispatch() #18 Symfony/Component/HttpKernel/HttpCache/HttpCache.php(434): Shopware\Components\HttpCache\HttpKernel-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #19 Shopware/Components/HttpCache/AppCache.php(234): Symfony\Component\HttpKernel\HttpCache\HttpCache-\>forward(Object(Symfony\Component\HttpFoundation\Request), true, NULL) #20 Symfony/Component/HttpKernel/HttpCache/HttpCache.php(403): Shopware\Components\HttpCache\AppCache-\>forward(Object(Symfony\Component\HttpFoundation\Request), true) #21 Symfony/Component/HttpKernel/HttpCache/HttpCache.php(303): Symfony\Component\HttpKernel\HttpCache\HttpCache-\>fetch(Object(Symfony\Component\HttpFoundation\Request), true) #22 Shopware/Components/HttpCache/AppCache.php(158): Symfony\Component\HttpKernel\HttpCache\HttpCache-\>lookup(Object(Symfony\Component\HttpFoundation\Request), true) #23 Symfony/Component/HttpKernel/HttpCache/HttpCache.php(192): Shopware\Components\HttpCache\AppCache-\>lookup(Object(Symfony\Component\HttpFoundation\Request), true) #24 Shopware/Components/HttpCache/AppCache.php(110): Symfony\Component\HttpKernel\HttpCache\HttpCache-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #25 Shopware/Bootstrap.php(70): Shopware\Components\HttpCache\AppCache-\>handle(Object(Symfony\Component\HttpFoundation\Request)) #26 Enlight/Application.php(192): Shopware\_Bootstrap-\>run() #27 shopware.php(83): Enlight\_Application-\>run() #28 {main} hat jemand noch einen Tip für mich? Bin jetzt echt schon ratlos und über jeden Tip dankbar.