I'm facing a problem with JSON Data.

I started with jqGrid “Demos Array” (local data) and it works fine.

Now, I would like to move to json callback but the grid shows 'Loading …' and firebug show this error:

n is undefined

grid.base-min.js :… b.fn.setSelection=function(w,z,q){return this.each(function(){var g=this,m,l,n;z=z===false?false:true;if(w===false){l= …

I provide “grid_data.txt” file in apache server root folder containing the json data:

{“total”: “1”,”page”: “1”, “records”: “1”, “rows” :