I have several grids that contain WebCombos which are added through templated columns. These are all on ASP.NET update panels. Frequently, when the data changes causing row to be removed from grids, I will get the following error: Error: igcmbo_comboState[c].grid is null. This error prevents any combos in the system from responding to new selections.

By changing to a local Infragistics javascript directory and adding an alert to igcmbo_getComboByGridName, I have discovered that the error occurs when the method is being called for a combo that was in the previously removed row.  I get the error when I attempt to access pretty much any combo on the page once the row has been removed. Since I can't figure out why it's trying to get the removed combo in the first place, I'm having trouble finding a suitable workaround to this issue.

Anyone have any ideas?