splitAt not working

I am having difficulty getting splitAt to work using the code below. Can anyone help? If I remove “mygrid.splitAt(5);” from the code below it works fine but if I leave it in then no data loads.

<link rel="STYLESHEET" type="text/css" href="../dhtmlxGrid/codebase/dhtmlxgrid.css"> 
<link rel="stylesheet" type="text/css" href="../dhtmlxGrid/codebase/skins/dhtmlxgrid_dhx_skyblue.css">
<script src="../dhtmlxGrid/codebase/dhtmlxcommon.js"></script>
<script src="../dhtmlxGrid/codebase/dhtmlxgrid.js"></script>
<script src="../dhtmlxGrid/codebase/dhtmlxgridcell.js"></script>
<script src="../dhtmlxGrid/codebase/ext/dhtmlxgrid_filter.js"></script>
<script src="../dhtmlxGrid/codebase/ext/dhtmlxgrid_splt.js"></script>
<script src="../dhtmlxGrid/codebase/ext/dhtmlxgrid_data.js"></script>
<script src="../dhtmlxGrid/codebase/ext/dhtmlxgrid_srnd.js"></script>
<script src="../dhtmlxGrid/codebase/excells/dhtmlxgrid_excell_link.js"></script>
<script src="../dhtmlxCombo/codebase/dhtmlxcombo.js"></script>
    
<script>
	var mygrid;
    function doInitGrid(){
	mygrid = new dhtmlXGridObject('mygrid_container');
    mygrid.setImagePath("../dhtmlxGrid/codebase/imgs/");
    mygrid.setHeader("Select,Links,#cspan,#cspan,Name,Breed,Country,ID Number,Current Controller Number,Primary Stud Code,Primary Breed Code,Primary NAAB Bull Number,Full NAAB Code,Registry Status,RHA Indicator,% US Daughters,Number of Herds in Milk PTA,Number of Daughters in Milk PTA,Sampling Code,Sampler Controller Number,Yield Reliability,Production Proof Origin,PTA Milk,PTA Fat Pounds,PTA Fat %,PTA Protein Pounds,PTA Protein %,Fluid Merit Dollars (FM$),Cheese Merit Dollars (CM$),PTA Somatic Cell Score,SCS Reliability,PTA Productive Life,PL Reliability,PTA Daughter Pregnancy Rate,DPR Reliability,SCR,SCR Reliability,SCR Breedings,Net Merit,Net Merit Reliability,Percentile Ranking for Net Merit,SCE Expected % Difficult Births,SCE Reliability,SCE Observed Calvings,DCE Expected % Difficult Births,DCE Reliability,DCE Number of daughters,SSB Expected % stillborn calves,SSB Reliability,SSB Number of observed calvings,DSB Expected % stillborn calves,DSB Reliability,DSB Number of daughters,Type Proof Origin,PTA Type,Reliability for PTAT,TPI or PTI,Udder Composite/Udder Index,Feet & Legs Composite,PTA or STA Stature,PTA or STA Strength,PTA or STA Body Depth,PTA or STA Dairy Form,PTA or STA Rump Angle,PTA or STA Thurl Width,PTA or STA Rear Legs - Side View,PTA or STA Rear Legs - Rear View,PTA or STA Foot Angle,PTA or STA Foot & Leg Score,PTA or STA Fore Udder Attachment,PTA or STA Rear Udder Height,PTA or STA Rear Udder Width,PTA or STA Udder Cleft,PTA or STA Udder Depth,PTA or STA Front Teat Placement,PTA or STA Rear Teat Placement,PTA or STA Teat Length,aAa Rating,DMS Scores,Semen Price,Date of Birth (YYYYMMDD),Short Name,Sire Country/ID Number,Maternal Grand Sire Country/ID Number,Recessives,Status,Pedigree Inbreeding,Daughter Inbreeding,Pedigree Expected Future Inbreeding,Genomic Inbreeding,Genomic Expected Future Inbreeding",null,["text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;","text-align:center;"]);
    mygrid.attachHeader("#numeric_filter,&nbsp;,#cspan,#cspan,#text_filter,#text_filter,#text_filter,#numeric_filter,#numeric_filter,#numeric_filter,#text_filter,#numeric_filter,#text_filter,#numeric_filter,#text_filter,#numeric_filter,#numeric_filter,#numeric_filter,#text_filter,#numeric_filter,#numeric_filter,#text_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#text_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#text_filter,#text_filter,#numeric_filter,#numeric_filter,#text_filter,#text_filter,#text_filter,#text_filter,#text_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter,#numeric_filter");
    mygrid.setInitWidths("50,40,30,30,200,60,70,80,120,100,100,100,100,100,100,100,110,130,100,120,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,120,110,100,100,110,100,100,110,100,110,110,100,100,100,100,100,100,140,100,100,100,100,100,100,100,110,110,100,110,120,110,110,100,100,110,110,100,100,100,100,100,100,120,120,100,60,100,100,100,100,100");
    mygrid.setColAlign("center,center,center,center,left,center,center,right,right,right,center,right,right,right,center,right,right,right,center,right,right,center,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,center,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,right,center,center,left,right,right,right,center,right,right,right,right,right");
    mygrid.setColTypes("ch,img,img,img,rotxt,rotxt,rotxt,ron,ron,ron,rotxt,ron,rotxt,ron,rotxt,ron,ron,ron,rotxt,ron,ron,rotxt,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,rotxt,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,ron,rotxt,ron,ron,ron,rotxt,rotxt,rotxt,rotxt,rotxt,ron,ron,ron,ron,ron");
    mygrid.setColSorting("int,str,str,str,str,str,str,int,int,int,str,int,str,int,str,int,int,int,str,int,int,str,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,str,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,int,str,str,int,int,str,str,str,str,str,int,int,int,int,int");
	mygrid.setNumberFormat("0.00",24);
	mygrid.setNumberFormat("0.00",26);
	mygrid.setNumberFormat("0.00",29);
	mygrid.setNumberFormat("0.0",31);
	mygrid.setNumberFormat("0.0",33);
	mygrid.setNumberFormat("0.00",35);
	mygrid.setNumberFormat("0.0",47);
	mygrid.setNumberFormat("0.0",50);
	mygrid.setNumberFormat("0.00",54);
	mygrid.setNumberFormat("0.00",57);
	mygrid.setNumberFormat("0.00",58);
	mygrid.setNumberFormat("0.00",59);
	mygrid.setNumberFormat("0.00",60);
	mygrid.setNumberFormat("0.00",61);
	mygrid.setNumberFormat("0.00",62);
	mygrid.setNumberFormat("0.00",63);
	mygrid.setNumberFormat("0.00",64);
	mygrid.setNumberFormat("0.00",65);
	mygrid.setNumberFormat("0.00",66);
	mygrid.setNumberFormat("0.00",67);
	mygrid.setNumberFormat("0.00",68);
	mygrid.setNumberFormat("0.00",69);
	mygrid.setNumberFormat("0.00",70);
	mygrid.setNumberFormat("0.00",71);
	mygrid.setNumberFormat("0.00",72);
	mygrid.setNumberFormat("0.00",73);
	mygrid.setNumberFormat("0.00",74);
	mygrid.setNumberFormat("0.00",75);
	mygrid.setNumberFormat("0.00",76);
	mygrid.setNumberFormat("0,000",78);
	mygrid.setNumberFormat("$0",79);
	mygrid.setNumberFormat("0.0",86);
	mygrid.setNumberFormat("0.0",87);
	mygrid.setNumberFormat("0.0",88);
	mygrid.setNumberFormat("0.0",89);
	mygrid.setNumberFormat("0.0",90);
	mygrid.init();
	mygrid.setSkin("dhx_skyblue");
	mygrid.enableSmartRendering(true,50);
	mygrid.splitAt(5);
	mygrid.loadXML("data.xml");
	}
</script>

</head>

<body onload="doInitGrid();">
<div class="fullscreen">
<div class="content">
<div id="mygrid_container" style="width:100%;height:100%">
</div>
</div>
</div>
</body>

Unfortunately the issue cannot be reconstructed locally.
Please, make sure that you have no colspans in your data at the border of the frozen and unfrozen parts of the grid.

If issue still occurs for you - pleas,e provide with a complete demo, where the issue can be reproduced.