I just tried the debugger. Put a breakpoint on the line :
final ColumnTree coltree = new ColumnTree();

The exception which I see now is ClassNotFoundException.

I have added gwtext-2.0.5/gwtext.jar to my Project's build path.

Any idea why this is happening  ?
Please help me.

On Apr 29, 12:50 pm, Neo <[email protected]> wrote:
> I am trying to use a ColumnTree in my application. But I get the
> following exception :
>
> Caused by: com.google.gwt.core.client.JavaScriptException:
> (TypeError): Object expected
>  number: -2146823281
>  description: Object expected
>         at com.gwtext.client.widgets.tree.ColumnTree.init(Native Method)
>
> The line which throws this exception is :
> final ColumnTree coltree = new ColumnTree();
>
> This is how my App.GWT.XML file looks like :
>
> <inherits name='com.google.gwt.user.User'/>
> <inherits name='com.gwtext.GwtExt' />
> <inherits name='com.gwtextux.GwtExtUx' />
>
> <stylesheet src="../js/ext/resources/css/ext-all.css" />
> <script src="../js/ext/adapter/ext/ext-base.js"></script>
> <script src="../js/ext/ext-all.js" />
>
> I read somewhere that I need to copy the ColumnNodeUI.js file to my js/
> ext folder. I did that but I still get the exception.
>
> Please help me in resolving this issue.
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