Linux Mint 18 after first synchronization no autoupdate

Hi I use on my Linux Mint Machine 18/64bit the Desktop client 2.2.4,
unfortunately after the first synchronization is done there is missing the recognizen about new files in the Folder.
Only when I stop and start the client the files are synced.

I run nextclud on a Asustor NAS Version 10.0

{"reqId":"0QMB8F3rfTCaT2qdvDd+","remoteAddr":"192.168.1.125","app":"no app in context","message":"Exception: {\"Exception\":\"Symfony\\\\Component\\\\Routing\\\\Exception\\\\RouteNotFoundException\",\"Message\":\"Unable to generate a URL for the named route \\\"settings_admin\\\" as such route does not exist.\",\"Code\":0,\"Trace\":\"#0 \\\/volume1\\\/Web\\\/nextcloud\\\/lib\\\/private\\\/Route\\\/Router.php(333): Symfony\\\\Component\\\\Routing\\\\Generator\\\\UrlGenerator->generate('settings_admin', Array, 1)\\n#1 \\\/volume1\\\/Web\\\/nextcloud\\\/lib\\\/private\\\/URLGenerator.php(69): OC\\\\Route\\\\Router->generate('settings_admin', Array)\\n#2 \\\/volume1\\\/Web\\\/nextcloud\\\/lib\\\/private\\\/URLGenerator.php(82): OC\\\\URLGenerator->linkToRoute('settings_admin', Array)\\n#3 \\\/volume1\\\/Web\\\/nextcloud\\\/apps\\\/updatenotification\\\/lib\\\/Notification\\\/BackgroundJob.php(101): OC\\\\URLGenerator->linkToRouteAbsolute('settings_admin')\\n#4 \\\/volume1\\\/Web\\\/nextcloud\\\/apps\\\/updatenotification\\\/lib\\\/Notification\\\/BackgroundJob.php(84): OCA\\\\UpdateNotification\\\\Notification\\\\BackgroundJob->checkCoreUpdate()\\n#5 \\\/volume1\\\/Web\\\/nextcloud\\\/lib\\\/private\\\/BackgroundJob\\\/Job.php(53): OCA\\\\UpdateNotification\\\\Notification\\\\BackgroundJob->run(NULL)\\n#6 \\\/volume1\\\/Web\\\/nextcloud\\\/lib\\\/private\\\/BackgroundJob\\\/TimedJob.php(54): OC\\\\BackgroundJob\\\\Job->execute(Object(OC\\\\BackgroundJob\\\\JobList), Object(OC\\\\Log))\\n#7 \\\/volume1\\\/Web\\\/nextcloud\\\/cron.php(143): OC\\\\BackgroundJob\\\\TimedJob->execute(Object(OC\\\\BackgroundJob\\\\JobList), Object(OC\\\\Log))\\n#8 {main}\",\"File\":\"\\\/volume1\\\/Web\\\/nextcloud\\\/3rdparty\\\/symfony\\\/routing\\\/Generator\\\/UrlGenerator.php\",\"Line\":130}","level":3,"time":"2017-01-23T09:04:28+00:00","method":"GET","url":"\/nextcloud\/cron.php","user":"--"}
{"reqId":"0QMB8F3rfTCaT2qdvDd+","remoteAddr":"192.168.1.125","app":"PHP","message":"Uninitialized string offset: 0 at \/volume1\/Web\/nextcloud\/lib\/private\/URLGenerator.php#207","level":3,"time":"2017-01-23T09:04:29+00:00","method":"GET","url":"\/nextcloud\/cron.php","user":"--"}
{"reqId":"yrihmBWKtQ9Yaan1LguT","remoteAddr":"192.168.1.125","app":"webdav","message":"Exception: {\"Message\":\"HTTP\\\/1.1 400 expected filesize 1222539 got 606208\",\"Exception\":\"Sabre\\\\DAV\\\\Exception\\\\BadRequest\",\"Code\":0,\"Trace\":\"#0 \\\/volume1\\\/Web\\\/nextcloud\\\/apps\\\/dav\\\/lib\\\/Connector\\\/Sabre\\\/Directory.php(137): OCA\\\\DAV\\\\Connector\\\\Sabre\\\\File->put(Resource id #88)\\n#1 \\\/volume1\\\/Web\\\/nextcloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(1036): OCA\\\\DAV\\\\Connector\\\\Sabre\\\\Directory->createFile('Repertoire.Roge...', Resource id #88)\\n#2 \\\/volume1\\\/Web\\\/nextcloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/CorePlugin.php(523): Sabre\\\\DAV\\\\Server->createFile('Dokumente\\\/Bewer...', Resource id #88, NULL)\\n#3 [internal function]: Sabre\\\\DAV\\\\CorePlugin->httpPut(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#4 \\\/volume1\\\/Web\\\/nextcloud\\\/3rdparty\\\/sabre\\\/event\\\/lib\\\/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\\n#5 \\\/volume1\\\/Web\\\/nextcloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(459): Sabre\\\\Event\\\\EventEmitter->emit('method:PUT', Array)\\n#6 \\\/volume1\\\/Web\\\/nextcloud\\\/3rdparty\\\/sabre\\\/dav\\\/lib\\\/DAV\\\/Server.php(248): Sabre\\\\DAV\\\\Server->invokeMethod(Object(Sabre\\\\HTTP\\\\Request), Object(Sabre\\\\HTTP\\\\Response))\\n#7 \\\/volume1\\\/Web\\\/nextcloud\\\/apps\\\/dav\\\/appinfo\\\/v1\\\/webdav.php(60): Sabre\\\\DAV\\\\Server->exec()\\n#8 \\\/volume1\\\/Web\\\/nextcloud\\\/remote.php(165): require_once('\\\/volume1\\\/Web\\\/ne...')\\n#9 {main}\",\"File\":\"\\\/volume1\\\/Web\\\/nextcloud\\\/apps\\\/dav\\\/lib\\\/Connector\\\/Sabre\\\/File.php\",\"Line\":150,\"User\":\"theo\"}","level":4,"time":"2017-01-23T09:11:35+00:00","method":"PUT","url":"\/nextcloud\/remote.php\/webdav\/Dokumente\/Bewerbungsunterlagen\/Unterlagen.doc\/Deutsch\/DOC.alt\/Rep.theo.Machnich.B.de.02.15.odt","user":"theo"}

Best Theo

PS: By the way the server is telling me the whole time der is a update 9.1.2 but the new one is 11