Can not place order!!! [SOLVED]

Code:

Fatal error: Uncaught exception RuntimeException with message The registry already contains an instance for tl_iso_address::id() thrown in system/modules/core/library/Contao/Model/Registry.php on line 180 #0 system/modules/core/library/Contao/Model.php(699): Contao\Model\Registry->register(Object(Isotope\Model\Address)) #1 system/modules/core/library/Contao/Model.php(689): Contao\Model->attach() #2 system/modules/core/library/Contao/Model.php(750): Contao\Model->detach(true) #3 system/modules/isotope/library/Isotope/Model/Config.php(120): Contao\Model->preventSaving() #4 templates/iso_document_default.html5(11): Isotope\Model\Config->getOwnerAddress() #5 system/modules/core/library/Contao/BaseTemplate.php(88): include('/var/www/projec...') #6 system/modules/core/library/Contao/Template.php(277): Contao\BaseTemplate->parse() #7 system/modules/core/classes/FrontendTemplate.php(46): Contao\Template->parse() #8 system/modules/isotope/library/Isotope/Model/Document/Standard.php(163): Contao\FrontendTemplate->parse() #9 system/modules/isotope_bs/classes/Document/Standard.php(82): Isotope\Model\Document\Standard->generateTemplate(Object(Isotope\Model\ProductCollection\Order), Array) #10 system/modules/isotope/library/Isotope/Model/Document/Standard.php(47): Isotope\Model\Document\Standard->generatePDF(Object(Isotope\Model\ProductCollection\Order), Array) #11 system/modules/isotope/library/Isotope/Model/ProductCollection/Order.php(446): Isotope\Model\Document\Standard->outputToFile(Object(Isotope\Model\ProductCollection\Order), '/var/www/vrhydr...') #12 system/modules/isotope/library/Isotope/Model/ProductCollection/Order.php(265): Isotope\Model\ProductCollection\Order->getNotificationTokens('1') #13 system/modules/isotope/library/Isotope/Model/ProductCollection/Order.php(184): Isotope\Model\ProductCollection\Order->updateOrderStatus('2') #14 system/modules/isotope/library/Isotope/Model/Payment/Cash.php(39): Isotope\Model\ProductCollection\Order->checkout() #15 system/modules/isotope/library/Isotope/Module/Checkout.php(143): Isotope\Model\Payment\Cash->processPayment(Object(Isotope\Model\ProductCollection\Order), Object(Isotope\Module\Checkout)) #16 system/modules/core/modules/Module.php(282): Isotope\Module\Checkout->compile() #17 system/modules/isotope/library/Isotope/Module/Module.php(112): Contao\Module->generate() #18 system/modules/isotope/library/Isotope/Module/Checkout.php(85): Isotope\Module\Module->generate() #19 system/modules/myModule/elements/ContentMyModule.php(71): Isotope\Module\Checkout->generate() #20 system/modules/core/library/Contao/Controller.php(476): BurkiScherer\ContentMyModule->generate() #21 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement(Object(Contao\ContentModel), 'main') #22 system/modules/core/modules/Module.php(282): Contao\ModuleArticle->compile() #23 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate() #24 system/modules/core/library/Contao/Controller.php(409): Contao\ModuleArticle->generate(false) #25 system/modules/core/library/Contao/Controller.php(269): Contao\Controller::getArticle(Object(Contao\ArticleModel), false, false, 'main') #26 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule('0', 'main') #27 system/modules/core/controllers/FrontendIndex.php(267): Contao\PageRegular->generate(Object(Contao\PageModel), true) #28 index.php(20): Contao\FrontendIndex->run() #29 {main}

Anybody any Idea!
Someone has the same problem here https://community.contao.org/de/show...ht-ausgel%F6st