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problem during deleting a row

Hi,

I am using dhtml DataProcessor, I am trying to delete a row and saving the changes I am getting the following error message:

Error: '_childIndexes' is null or not an object
File: dhtmlxgrid.js
Line: dhtmlXGridObject.prototype={ ...
cells:function(row_id, col){..    
var cell = (c._childIndexes ? c.childNodes[c._childIndexes[col]] : c.childNodes[col]);

This was came while
1) first I deleted the row from the grid using following function
function deleteRow(abcd)
{

if(confirm("Are you sure you want to delete row"+abcd)){
mygrid.deleteSelectedItem();
}
Then the row was Scratched in grid.
2) I am trying to save the changes using SAVE button, I am getting the error.

Grid Initialization Code:

if(typeof(mygrid) == "undefined"){
mygrid = new dhtmlXGridObject('gridbox');
mygrid.setHeader(levelHeader);
mygrid.attachHeader(header);
mygrid.setColumnIds(columnIds); // here the ID's of columns need to be set

mygrid.setInitWidths(intiWidths);
mygrid.setColTypes(colTypes);
mygrid.setColSorting(colSorting);

mygrid.setImagePath("images/treeImgs/");
mygrid.setSkin("xp"); // moved before setAwaitedRowHeight
mygrid.enableSmartRendering(true);
mygrid.setAwaitedRowHeight(25);

mygrid.setEditable(mygrid.isEditable);

mygrid.init();

//function called when editing of a cell
mygrid.attachEvent("onEditCell",function(stage,id,ind,value){
if (stage==2) {
var type = mygrid.fldSort[ind];
var columnId = mygrid.getColumnId(ind);

if (!some_check(value,type,columnId)) {
alert("incorrect data");
return false;
}
}
return true;
})
mygrid.attachEvent("onXLS",function(){

//show loading message here

document.getElementById('message').style.display='block';

})

mygrid.attachEvent("onXLE",function(){

//hide loading message here
document.getElementById('message').style.display='none';
})


mygrid.clearAll();
//before loading set cursor to default
document.body.style.cursor='default';

mygrid.loadXML('fetchGridData.do?methodName=loadGrid&prm1='+param1+'&prm2='+param2);
//============================================================================================

myDataProcessor = new dataProcessor('fetchGridData.do?methodName=loadGrid&prm1='+param1+'&prm2='+param2); myDataProcessor.enableDebug(true);
myDataProcessor.enableDataNames(true);

myDataProcessor.setUpdateMode("off");//available values: cell (default), row, off
myDataProcessor.defineAction("error",myErrorHandler);
myDataProcessor.defineAction("insert",setUserDataFunction);
myDataProcessor.defineAction("delete",setDleteFunction);
myDataProcessor.defineAction("update",setUserDataFunction);
myDataProcessor.setTransactionMode("POST",true);
myDataProcessor.init(mygrid);
setGlobalUserData(colNullable);

}



/Thanks
Raj

The original reason of the error - the some API call was executed against not existing row.
The issue may be caused by incorrect response from dataprocessor - it may be incorrect @sid or @tid value in response.
It hard to suggest anything without ability to reconstruct the problem  - if it still occurs for you - please provide any kind of demo link , where issue can be reconstructed ( you can send details to support@dhtmlx.com )