I've installed WowzaStreamingEngine today. I wasn't expected that it will lauch WowzaStreamingEngine during the installation. My WowzaMediaServer 3 Was still running.

So now WowzaStreamingEngine is not working and I can't stop WowzaMediaServer 3

xx.xx.xx.xx:1935 shows
Wowza Media Server 3 Perpetual Edition 3.6.2 build5334

when i want to stop it :
service WowzaMediaServer stop

ERROR: Missing license file: (/usr/local/WowzaMediaServer/conf/Server.license)
You must first run Wowza Media Server 3 in
standalone mode to enter serial number. Execute the
following commands to run in standalone mode:

cd /usr/local/WowzaMediaServer
when i try to shutdown with ./shutdown.sh i get this:

Exception in thread "main" java.lang.NoClassDefFoundError: com/wowza/wms/bootstrap/Bootstrap
Caused by: java.lang.ClassNotFoundException: com.wowza.wms.bootstrap.Bootstrap
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: com.wowza.wms.bootstrap.Bootstrap. Program will exit.
I am completely lost.

Any ideas?