Wowza Community

Wowza IDE 2 and debugger not working!


We now have a licensed Wowza Streaming Engine 4.0. The server starts and works including plugins. What does not work is ability to debug the plugins (which otherwise work) from the Eclipse IDE. I followed the instrunctions, installed Java SDK, Eclipse, got everything building and no errors are reported.

However, when I try to launch the debugger or the Server from the within the Eclipse IDE i get the following error message:

Error starting: java.lang.reflect.InvocationTargetException


at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(

at sun.reflect.DelegatingMethodAccessorImpl.invoke(

at java.lang.reflect.Method.invoke(

at com.wowza.wms.bootstrap.Bootstrap.startServer(

at com.wowza.wms.bootstrap.Bootstrap.main(

Caused by: java.lang.NoClassDefFoundError: org/apache/commons/lang/SystemUtils

at com.wowza.wms.bootstrap.BootstrapSystemTuningInfo.getSystemTuningInfo(

at com.wowza.wms.server.ServerTuningHandler.(

at com.wowza.wms.server.Server.(

at com.wowza.wms.server.Server.getInstance(

at com.wowza.wms.server.Server.start(

… 6 more

Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.SystemUtils



at Method)


at java.lang.ClassLoader.loadClass(

at sun.misc.Launcher$AppClassLoader.loadClass(

at java.lang.ClassLoader.loadClass(

… 11 more

There must be something wrong with how the Eclipse is trying to launch the Wowza server, but I have no idea what. All settings are default settings.



Hi Atmapuri!

You need properly configure the Eclipse.Take a look at this article:

How to use Wowza IDE with Wowza Transcoder AddOn

Best regards,


Thank you! That was a big help:


Great, I had the same issue and got fixed with this solution. Thanks