Thank you for your reply, Tony. I will put an example together sometime today.

On a related note, do you agree that this code (below) should always work, assuming '#treegrid' starts off as a normal, successfully rendered, 'working' grid?

var ccm = $(“#treegrid”).getGridParam();

$(“#treegrid”).jqGrid(“GridUnload”);

$(“#treegrid”).jqGrid(ccm);

It yields a GC error, “Uncaught TypeError: Cannot read property 'stype' of undefined”. I will isolate this as well, if it would be useful to you.