combo box error 0x80004005 (NS_ERROR_FAILURE) [nsIDOMNSHTMLInputElement.selectionStar

[rlsutton1]

I'm getting the below error when using clearValue on a ComboBoxItem. It requires a specific sequence of events to cause it. I'm wondering if anyone has encountered this before and has any knowledge of the root of this problem. I should point out that I've placed this smartGWT component into a GWT compoent. something like this...

DynamicForm df = new DynamicForm();
ComboBoxItem cb = new ComboBoxItem();
df.setFields(cb);
HorizontalPalnel hp = new HorizontalPanel();
hp.add(df);

Error in showLeadPreview: (NS_ERROR_FAILURE): Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMNSHTMLInputElement.selectionStart]
 QueryInterface: function QueryInterface() {
    [native code]
}
 result: 2147500037
 filename: http://servicemanager-robert:8082/servicemanager/noojeedialergwt/sc/modules/ISC_Forms.js
 lineNumber: 1220
 columnNumber: 0
 inner: null
 data: null
 initialize: function initialize() {
    [native code]
}