invocation error

[larry...@gmail.com]

java.lang.reflect.InvocationTargetException

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

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.codename1.impl.javase.Executor$1.run(Executor.java:95)

at com.codename1.ui.Display.processSerialCalls(Display.java:994)

at com.codename1.ui.Display.mainEDTLoop(Display.java:830)

at com.codename1.ui.RunnableWrapper.run(RunnableWrapper.java:119)

at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:177)

Caused by: java.lang.ClassCastException: com.codename1.ui.Container cannot be cast to com.codename1.ui.Form

at com.codename1.ui.util.UIBuilder.showForm(UIBuilder.java:2366)

at generated.StateMachineBase.startApp(StateMachineBase.java:56)

at generated.StateMachineBase.<init>(StateMachineBase.java:30)

at generated.StateMachineBase.<init>(StateMachineBase.java:99)

at userclasses.StateMachine.<init>(StateMachine.java:21)

This is what I get each time I try to launch the application. I dont seem to get where the error is coming from. Kindly help. Thanks

[Shai Almog]

Did you change the main form of the application to be a container?
When adding a new UI element in the designer did you select container then assigned it as the first form?