Possible bug found when upgrading from SmartGWT 3.1 to 4.0

Hi there,

I just upgraded from SmartGWT 3.1 to 4.0 and I got a problem when using on 4.0.

I get:

Uncaught exception escaped : com.google.gwt.core.client.JavaScriptException
(TypeError) @com.google.gwt.core.client.impl.Impl::apply(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)([JavaScript object(1694), JavaScript object(1693), JavaScript object(1746)]): Cannot call method '$58r' of undefined
See the Development console log for details.
Register a GWT.setUncaughtExceptionHandler(..) for custom uncaught exception handling.

Stacktrace:

00:01:25.118 [ERROR] Uncaught exception escaped
com.google.gwt.core.client.JavaScriptException: (TypeError) @com.google.gwt.core.client.impl.Impl::apply(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)([JavaScript object(1694), JavaScript object(1693), JavaScript object(1746)]): Cannot call method '$58r' of undefined at com.google.gwt.dev.shell.BrowserChannelServer.invo keJavascript(BrowserChannelServer.java:249) at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke (ModuleSpaceOOPHM.java:136) at com.google.gwt.dev.shell.ModuleSpace.invokeNative( ModuleSpace.java:571) at com.google.gwt.dev.shell.ModuleSpace.invokeNativeO bject(ModuleSpace.java:279) at com.google.gwt.dev.shell.JavaScriptHost.invokeNati veObject(JavaScriptHost.java:91) at com.google.gwt.core.client.impl.Impl.apply(Impl.ja va) at com.google.gwt.core.client.impl.Impl.entry0(Impl.j ava:242) at sun.reflect.GeneratedMethodAccessor111.invoke(Unkn own Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at com.google.gwt.dev.shell.MethodAdaptor.invoke(Meth odAdaptor.java:103) at com.google.gwt.dev.shell.MethodDispatch.invoke(Met hodDispatch.java:71) at com.google.gwt.dev.shell.OophmSessionHandler.invok e(OophmSessionHandler.java:172) at com.google.gwt.dev.shell.BrowserChannelServer.reac tToMessages(BrowserChannelServer.java:293) at com.google.gwt.dev.shell.BrowserChannelServer.proc essConnection(BrowserChannelServer.java:547) at com.google.gwt.dev.shell.BrowserChannelServer.run( BrowserChannelServer.java:364) at java.lang.Thread.run(Thread.java:722)

Any ideas?