java.lang.NullPointerException
   at java.lang.Class$MethodArray.addAll(Class.java:2746)
   at java.lang.Class.privateGetPublicMethods(Class.java:2903)
   at java.lang.Class.getMethods(Class.java:1615)
   at org.apache.tools.ant.IntrospectionHelper.<init>(IntrospectionHelper.java:181)
   at org.apache.tools.ant.IntrospectionHelper.getHelper(IntrospectionHelper.java:351)
   at org.apache.tools.ant.IntrospectionHelper.getHelper(IntrospectionHelper.java:330)
   at org.apache.tools.ant.module.bridge.impl.IntrospectionHelperImpl.<init>(IntrospectionHelperImpl.java:59)
   at org.apache.tools.ant.module.bridge.impl.BridgeImpl.getIntrospectionHelper(BridgeImpl.java:138)
   at org.apache.tools.ant.module.api.IntrospectedInfo.analyze(IntrospectedInfo.java:451)
   at org.apache.tools.ant.module.api.IntrospectedInfo.register(IntrospectedInfo.java:374)
Caused: java.io.IOException: Could not load class org.apache.tools.ant.taskdefs.optional.image.Image: java.lang.NullPointerException
   at org.apache.tools.ant.module.api.IntrospectedInfo.load(IntrospectedInfo.java:328)
   at org.apache.tools.ant.module.api.IntrospectedInfo.loadDefaults(IntrospectedInfo.java:156)
   at org.apache.tools.ant.module.api.IntrospectedInfo.init(IntrospectedInfo.java:139)
   at org.apache.tools.ant.module.api.IntrospectedInfo.getDefs(IntrospectedInfo.java:218)
   at org.apache.tools.ant.module.api.IntrospectedInfo.scanMap(IntrospectedInfo.java:575)
   at org.apache.tools.ant.module.api.IntrospectedInfo.scanProject(IntrospectedInfo.java:545)
   at org.apache.tools.ant.module.bridge.impl.BridgeImpl$PostRun.run(BridgeImpl.java:477)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)