java.lang.ClassFormatError: Invalid Constant Pool entry Type 18
	at org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPoolEntry.readEntry(ConstantPoolEntry.java:159)
	at org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPool.read(ConstantPool.java:67)
	at org.apache.tools.ant.taskdefs.optional.depend.ClassFile.read(ClassFile.java:72)
	at org.apache.tools.ant.taskdefs.optional.depend.AntAnalyzer.determineDependencies(AntAnalyzer.java:92)
	at org.apache.tools.ant.util.depend.AbstractAnalyzer.getClassDependencies(AbstractAnalyzer.java:100)
	at org.apache.tools.ant.taskdefs.optional.depend.Depend.determineDependencies(Depend.java:346)
	at org.apache.tools.ant.taskdefs.optional.depend.Depend.execute(Depend.java:718)
	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
	at sun.reflect.GeneratedMethodAccessor630.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:487)
	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
	at org.apache.tools.ant.Task.perform(Task.java:348)
	at org.apache.tools.ant.Target.execute(Target.java:392)
	at org.apache.tools.ant.Target.performTasks(Target.java:413)
	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
	at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
	at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
	at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:283)
	at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:541)
	at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153)