Grid with frozen column and percentage widths

Hello,
I am facing a problem in IE when I try to use a grid with percentage widths and 1 frozen column.
Grid doesn’t appear in the screen.
It works perfectly in FF.

This is my code:

mygrid = new dhtmlXGridObject('mygrid_container');
mygrid.selMultiRows = true;// treegrid
mygrid.setImagePath("../dhtmlx/dhtmlxgrid/imgs/");

mygrid.setHeader(",msg1,#cspan,#cspan,msg2,#cspan,#cspan,msg3,#cspan,#cspan,msg4,#cspan,#cspan,msg5,#cspan,#cspan,msg6,#cspan,#cspan,msg7,#cspan,#cspan,msg8,#cspan,#cspan,msg9,#cspan,#cspan,msg10,#cspan,#cspan");
mygrid.attachHeader("c0 / c1/ c2,c3,c4,c5,c6,c7,c9,c10,c11,c12,c13,c14,c15,c16,c17,c18,c19,c20,c21,c22,c23,c24,c25,c26,c27,c28,c29,c30,c31,c32,c33");

mygrid.enableResizing("false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false");
mygrid.enableRowsHover(false);
mygrid.preventIECaching(true); 	

/*mygrid.setInitWidths("250,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100,100");*/
mygrid.setInitWidthsP("20,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10");

mygrid.setColAlign("left,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");
mygrid.setColSorting("na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na,na");
mygrid.setColTypes("tree,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro,ro");

mygrid.setSkin("mySkin");
mygrid.enableAlterCss("even","odd");

mygrid.enableAutoHeigth(true,"auto");
mygrid.enableDistributedParsing(true);
	
mygrid.init();
mygrid.splitAt(1);

I am using DHX Pro Edition v.3.0 build 110707

Thanks in advance!

Unfortunately the issue cannot be reconstructed locally.
Your code works well for us in IE9.
Please, provide a complete demo to reconstruct the issue