[3.0RC1] this.applyGroupField is not a function

[Sesshomurai]

Hi,
Getting an odd exception when trying to open a panel with grid in my Ext2 app running on Ext3 (see below).

Here is the ext3RC1 code from ext-all-debug.js

Ext.data.GroupingStore = Ext.extend(Ext.data.Store, {
    
    //inherit docs
    constructor: function(config){
        Ext.data.GroupingStore.superclass.constructor.call(this, config);
        this.applyGroupField();
    },

The function exists in the class. What could be causing this exception?

Error: this.applyGroupField is not a function
Source File: http://localhost/ontregrid/ext3/ext-all-debug.js
Line: 14443

Thanks for any tips.

[Sesshomurai]

Ok, figured this out. Its not a bug. I was inadvertently calling a super constructor from a GroupStore class from a class not extended from it. Error didn't occur in 2.2.1.