Error with i.e. (this.el is null or not is a object)

[eduxativa]

Please, i need help, in my application to run with Internet Explorer displays an error when I press a button, this.el is null or not is a object, code 0, the application works fine, but I have to press buttons repeatedly until you make the function displays the error this.el. ...
Running the application in host mode with GWT browser works perfectly and there is no problem, the error arises when running internet explorer, chrome, firefox, etc ...
How can I fix this?

[Eric Clayberg]

No idea.

General GWT questions should be directed to Google's GWT forum.