jQuery Grid Plugin - jqGrid

I change version of jqgrid plugin from 3.4.1 to 3.4.3 and Opera browser(
ver. 9.62) doesn't load properly(no visible tables) .Even the demonstration page  hangs on under Opera.

http://trirand.com/jqgrid/jqgrid.html

Other browser like FX 2.0.0.20 and Chrome(1.0.154.48) ,IE(6.0) works fine.

DragonFly(Opera debug tool) gave me such a message:

Event thread: DOMContentLoaded
Error:
name: TypeError
message: Statement on line 197: Type mismatch (usually non-object value supplied where object required)
Backtrace:
  Line 197 of linked script http://localhost/Shop_dev/www/.....s/admin.js
  $("#grid_table").jqGrid({
  ... Line 1 of eval script
  function(){return a.call(this,D)}
  ... Line 1 of eval script
  function(){this.call(document)}
  ... Line 1 of eval script
  function(d,a,c){var e,i=0,length=d.length;if(c){if(length==undefined){for(e in d)if(a.apply(d[e],c)===false)break}else for(;i<length;)if(a.apply(d[i++],c)===false)break}else{if(length==undefined){for(e in d)if(a.call(d[e],e,d[e])===false)break}else for(var b=d[0];i<length&&a.call(b,i,b)!==false;b=d[++i]){}}return d}
  Line 1 of eval script
  function(){if(!D.isReady){D.isReady=true;if(D.readyList){D.each(D.readyList,function(){this.call(document)});D.readyList=null}D(document).triggerHandler("ready")}}
  Line 1 of eval script
  function(){if(D.isReady)return;for(var i=0;i<document.styleSheets.length;i++)if(document.styleSheets[i].disabled){setTimeout(arguments.callee,0);return}D.ready()}
  ...
stacktrace: n/a; see 'opera:config#UserPrefs|Exceptions Have Stacktrace'

Greetings

Majkel