combo selection in Grid using FF error

the following JS error occurs when selecting an item:

Error: this.getContent("box/text").element().focus is not a function
Source File: http://server/dir/ActiveWidgets/runtime/lib/aw.js
Line: 47

myCombo1 = new AW.Templates.Combo;
myCombo2 = new AW.Templates.Combo;
    
obj.setCellTemplate(myCombo1, 3);
obj.setPopupTemplate(list1, 3);
    
obj.setCellTemplate(myCombo2, 4);
obj.setPopupTemplate(list2, 4);

also getting this error when using tabs in FF:

Error: this.element().focus is not a function
Source File: http://hottie.theinsitegroup.net/kdavis/ActiveWidgets/runtime/lib/aw.js
Line: 72

obj.setController("myTabKeys", {
        onKeyTab: "selectNextCell",
        onKeyShiftTab: "selectPreviousCell"
    });