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Article - CS300561

Error "Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/BuildListener" after IOT patch installation

Modified: 06-Feb-2019   


Applies To

  • Windchill Navigate (formerly ThingWorx Navigate) 1.8.0
Navigate is installed on a VM

Description

Error below in MethodServer.log after IOT patch installation:
 
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/tools/ant/BuildListener
        at wt.manager.ServerLauncher.startServerReturningProcess(ServerLauncher.java:125)
        at wt.manager.ServerLauncher.startServer(ServerLauncher.java:106)
        at wt.manager.ServerLauncher.main(ServerLauncher.java:560)
Caused by: java.lang.ClassNotFoundException: org.apache.tools.ant.BuildListener
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 3 more
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