Error using SplitLayoutPanel in GWT

[Shyam Visamsetty]

Hi,

I am using the SplitLayoutPanel in GWT and I get the error. The code
is as follows.

DockPanel mainPanel = new DockPanel();
mainPanel.setBorderWidth(5);
mainPanel.setSize("100%", "100%");

Widget header = createHeaderWidget();
mainPanel.add(header, DockPanel.NORTH);
mainPanel.setCellHeight(header, "30px");

Widget footer = createFooterWidget();
mainPanel.add(footer, DockPanel.SOUTH);
mainPanel.setCellHeight(footer, "25px");

SplitLayoutPanel categoriesAndTasks;
categoriesAndTasks = new SplitLayoutPanel();

//categoriesAndTasks.addWest(new Label("LeftWidget"), 100);
categoriesAndTasks.addEast(new Label("RightWidget"), 200);

mainPanel.add(categoriesAndTasks, DockPanel.CENTER);

Errors:

java.lang.VerifyError: (class: com/google/gwt/core/client/Scheduler,
method: <init> signature: ()V) Illegal constant pool index
at
com.google.gwt.user.client.ui.LayoutCommand.schedule(LayoutCommand.java:
104)
at
com.google.gwt.user.client.ui.DockLayoutPanel.animate(DockLayoutPanel.java:
196)
at
com.google.gwt.user.client.ui.DockLayoutPanel.animate(DockLayoutPanel.java:
192)
at
com.google.gwt.user.client.ui.DockLayoutPanel.insert(DockLayoutPanel.java:
364)
at
com.google.gwt.user.client.ui.SplitLayoutPanel.insert(SplitLayoutPanel.java:
215)
at
com.google.gwt.user.client.ui.DockLayoutPanel.addEast(DockLayoutPanel.java:
158)
at com.nt.client.PageWidget.createDockPanel(PageWidget.java:131)
at com.nt.client.Cms.onModuleLoad(Cms.java:137)
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:585)
at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:
369)
at
com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:
185)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
380)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
222)
at java.lang.Thread.run(Thread.java:595)

Your help will be appreciated. TIA.

Thanks,
Shyam Visamsetty.