I have exactly the same problem. When I catch the rendered event and try to call igGridUpdating(X), I'm always getting "cannot call methods on igGridFiltering prior to initialization; attempted to call method X"

Example:

rendered: function(evt, ui) {
                var editing = grid.igGridUpdating("isEditing");
},

When I place a breakpoint at "var editing", I'm hitting the breakpoint and I'm always getting "Uncaught Error: cannot call methods on igGridUpdating prior to initialization; attempted to call method 'isEditing'"

dataSource is JSON data and showing properly in the grid. I can perfectly edit, delete, save,... But every call on igGridUpdating is failing.

hey is this possible to call method after infragistic load 

Peter,

I tried as you suggested, but I am still receiving the "prior to initialization" error?

<script>function lstSourceCharacteristicValuesSearch() {
var x = document.getElementById("sbSourceCharacteristicValues").value;
if($("#lstSourceCharacteristicValues_table").data("igGrid")!=null) {
$("#lstSourceCharacteristicValues_table").igGridFiltering("destroy");
$("#lstSourceCharacteristicValues_table").igGridFiltering("filter", ([{fieldName: "lookup_display", expr: x, cond: "contains"}]));
}
}</script><div id="sbSourceCharacteristicValueslstSourceCharacteristicValues" style="position:abosolute; left:50px; top:625px; width:400px; height:48px; z-index:4;" class="SearchBox"><input type="text" id="sbSourceCharacteristicValues" onkeyup="lstSourceCharacteristicValuesSearch()"></div></div>
</div>

I am using filter using Javascript and getting following error:

Error: "cannot call methods on igGridFiltering prior to initialization; attempted to call method 'filter'"

1) grid already refreshed with data (loaded)

2) applying the filter programmatically

function applyFilter() {

var component = $("#Component").val();
var attKey = $("#AttributeKey").val();
var attValue = $("#AttributeValue").val();

debugger;
$("#grid").igGridFiltering('filter', ([
{fieldName: "ComponentDesc", expr: component, cond: "contains"},
{fieldName: "AttributeDesc", expr: attKey, cond: "contains"},
{fieldName: "CategoryDesc", expr: attValue, cond: "contains"}
]));
}

help is much appreciated.