Hello,
Please check your code again. Also check if you have loaded all the needed JavaScript and CSS files.
In order to isolate the problem begin with very simple example.
Also I see one time you use
.jqGrid('navGrid', '#' + pagerID, { add: false, edit: false, view: false, del: false, refresh: false, search: false })
but after this
jQuery(“#” + tblName).navButtonAdd('….
PLEASE TURN OFF THE $.jgrid.no_legacy_api option like this
$.jgrid.no_legacy_api = false
or use
jQuery(“#” + tblName).jqGrid('navButtonAdd', ….
Kind Regards
Tony