but I don't understand how this can influence the fact that inside the web ui login I don't see any selectable value for the profile field: the "internal" default domain is missing.... I didn't implement any other
2015-12-19 13:57:22,447 ERROR [org.ovirt.engine.core.extensions.mgr.ExtensionsManager] (ServerService Thread Pool -- 41) [] Error in activating extension 'internal-authn': Database schema is older than required by currently installed ovirt-engine-extension-aaa-jdbc package version. Please upgrade profile database schema before proceeding (for more info about upgrade please take a look at README.admin file contained in ovirt-engine-extension-aaa-jdbc package).
2015-12-19 13:57:22,448 ERROR [org.ovirt.engine.core.utils.extensionsmgr.EngineExtensionsManager] (ServerService Thread Pool -- 41) [] Could not initialize extension 'internal-authn'. Exception message is: Class: class org.ovirt.engine.core.extensions.mgr.ExtensionInvokeCommandFailedException