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Refreshing Icons - Error MSG

I am trying to refresh the treegrid icons which worked and for some reason just stopped working.

My code is below.
treeGrid.updateFromXML("userxml.aspx", false, false, function(){
//Refresh the icons after a user has been enabled
treeGrid._h2.forEachChild(0, function(el) {
var cell = treeGrid.cells(el.id, data[1]);
cell.setImage(cell.getAttribute("image"));
});
})



I get the following error message "Microsoft JScript runtime error: 'childNodes' is null or not an object" at the below code location in dhtmlxgrid.js.

cells:function(row_id, col){
        if (arguments.length == 0)
            return this.cells4(this.cell);
        else
            var c = this.getRowById(row_id);
        var cell = (c._childIndexes ? c.childNodes[c._childIndexes[col]] : c.childNodes[col]);
        return this.cells4(cell);

Such error can occurs in next situation
- non-unique IDs used in TreeGrid
- 0 was used as ID for some element
- incorrect cell index provided for cells command

The last one may be related to the next line
>>var cell = treeGrid.cells(el.id, data[1]);
be sure that data[1] - is a valid index value

I just commented out the jquery library and it works as it should. Have you have experience using the jquery library with dhtmlx?

I found the issue. The issue is when the treegrid is not fully expanded and I try to perform a call, I get a null or object expected error msg. When I have the treegrid fully expanded, it works as it should. How do I correct this?

Such issue occurs because of while performing some methods expected object is not loaded yet. You should wait till treeGrid fully expanded.