Dlink DFL-M510

Hej Alla mitt första inlägg här
Har köpt en begagnad DFL-M510
men när jag för söker att ansluta via nätverlet så får jag upp ett fel tro det har något med java att göra

java.lang.SecurityException: com.sun.deploy.net.JARSigningException: En osignerad post har hittats i resursen: http://192.168.1.1:80/lib/foxtrot.jar
at com.sun.deploy.cache.CacheEntry.getJarFile(Unknown Source)
at com.sun.javaws.security.SigningInfo.check(Unknown Source)
at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source)
at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResources(Unknown Source)
at com.sun.javaws.Launcher.prepareResources(Unknown Source)
at com.sun.javaws.Launcher.prepareAllResources(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.launch(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main.access$000(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: com.sun.deploy.net.JARSigningException: En osignerad post har hittats i resursen: http://192.168.1.1:80/lib/foxtrot.jar
... 14 more