Not sure if anyone else has encountered this but having recently switched to jqGrid 4.0.0 I have encountered an issue with the successfunc in the saverow function.

Ever since the upgrade my successfunc was no longer getting called, and my task was not completing.

Having debugged through the jquery.jqGrid.src.js file I have discovered this line:

8295: if( $.isFunction(o.succesfunc)) { ret = o.succesfunc.call($t, res);}