Upgrading from Beta11 to Beta12 is not possible

Downloaded Beta 12, as per the documentation (UPGRADE.txt), I removed all except /sites

Copied all Beta12 files, then went to site/drupal/update.php (update.php does not exists, but it seems to try to load).

Then I get the following:

Additional uncaught exception thrown while handling exception.
Original

LogicException: Unable to parse the controller name "views_page_display_pre_render". in Drupal\Core\Controller\ControllerResolver->createController() (line 113 of /var/www/html/drupal/core/lib/Drupal/Core/Controller/ControllerResolver.php).

Drupal\Core\Controller\ControllerResolver->createController('views_page_display_pre_render')
Drupal\Core\Controller\ControllerResolver->getControllerFromDefinition('views_page_display_pre_render')
Drupal\Core\Render\Renderer->doRender(Array, )
Drupal\Core\Render\Renderer->render(Array)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1)
__TwigTemplate_e2ee6db6c0ef31e4f381363ebd81b065b21f90c0ccdd84b24473dbd20dfa10e9->doDisplay(Array, Array)
Twig_Template->displayWithErrorHandling(Array, Array)
Twig_Template->display(Array)
Twig_Template->render(Array)
twig_render_template('core/themes/classy/templates/layout/html.html.twig', Array)
Drupal\Core\Theme\ThemeManager->theme('html', Array)
Drupal\Core\Theme\ThemeManager->render('html', Array)
Drupal\Core\Render\Renderer->doRender(Array, 1)
Drupal\Core\Render\Renderer->render(Array, 1)
Drupal\Core\Render\Renderer->renderRoot(Array)
Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage(Array, 'Error', 'maintenance_page', Array)
Drupal\Core\DependencyInjection\Container\prod\Drupal_Core_Render_BareHtmlPageRenderer_Proxy->renderBarePage(Array, 'Error', 'maintenance_page')
Drupal\Core\EventSubscriber\DefaultExceptionSubscriber->onHtml(Object)
Drupal\Core\EventSubscriber\DefaultExceptionSubscriber->onException(Object, 'kernel.exception', Object)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.exception', Object)
Symfony\Component\HttpKernel\HttpKernel->handleException(Object, Object, 1)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1)
Drupal\Core\DependencyInjection\Container\prod\Symfony_Component_HttpKernel_HttpKernel_Proxy->handle(Object, 1, 1)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1)
Drupal\Core\DependencyInjection\Container\prod\Drupal_Core_StackMiddleware_Session_Proxy->handle(Object, 1, 1)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1)
Drupal\Core\DependencyInjection\Container\prod\Drupal_Core_StackMiddleware_KernelPreHandle_Proxy->handle(Object, 1, 1)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1)
Stack\StackedHttpKernel->handle(Object, 1, 1)
Drupal\Core\DrupalKernel->handle(Object)

Additional

LogicException: Unable to parse the controller name "views_page_display_pre_render". in Drupal\Core\Controller\ControllerResolver->createController() (line 113 of /var/www/html/drupal/core/lib/Drupal/Core/Controller/ControllerResolver.php).

Drupal\Core\Controller\ControllerResolver->createController('views_page_display_pre_render')
Drupal\Core\Controller\ControllerResolver->getControllerFromDefinition('views_page_display_pre_render')
Drupal\Core\Render\Renderer->doRender(Array, )
Drupal\Core\Render\Renderer->render(Array)
Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1)
__TwigTemplate_e2ee6db6c0ef31e4f381363ebd81b065b21f90c0ccdd84b24473dbd20dfa10e9->doDisplay(Array, Array)
Twig_Template->displayWithErrorHandling(Array, Array)
Twig_Template->display(Array)
Twig_Template->render(Array)
twig_render_template('core/themes/classy/templates/layout/html.html.twig', Array)
Drupal\Core\Theme\ThemeManager->theme('html', Array)
Drupal\Core\Theme\ThemeManager->render('html', Array)
Drupal\Core\Render\Renderer->doRender(Array, 1)
Drupal\Core\Render\Renderer->render(Array, 1)
Drupal\Core\Render\Renderer->renderRoot(Array)
Drupal\Core\Render\BareHtmlPageRenderer->renderBarePage(Array, 'Error', 'maintenance_page', Array)
Drupal\Core\DependencyInjection\Container\prod\Drupal_Core_Render_BareHtmlPageRenderer_Proxy->renderBarePage(Array, 'Error', 'maintenance_page')
_drupal_log_error(Array, 1)
_drupal_exception_handler(Object)
Drupal\Core\DrupalKernel->handleException(Object, Object, 1)
Drupal\Core\DrupalKernel->handle(Object)