jQuery Grid Plugin - jqGrid

Hi all,

 I am trying to use jqgrid in one of my projects. The following are my script  and css imports,

<link rel="stylesheet" type="text/css" media="screen" href="css/jquery-ui-1.8.12.custom.css" />
<link rel="stylesheet" type="text/css" media="screen" href="css/ui.jqgrid.css" />
<link rel="stylesheet" type="text/css" media="screen" href="css/ui.multiselect.css" />
<script src="http://code.jquery.com/jquery-1.5.2.min.js" type="text/javascript"></script>
<script src="js/jquery.jqGrid.min.js" type="text/javascript"></script>
<script src="js/jquery-ui-1.8.12.custom.min.js" type="text/javascript"></script>
<script src="js/jquery.contextmenu.js" type="text/javascript"></script>
<script src="js/jquery.searchFilter.js" type="text/javascript"></script>
<script src="js/jquery.tablednd.js" type="text/javascript"></script>
<script src="js/ui.multiselect.js" type="text/javascript"></script>
<script src="js/grid.loader.js" type="text/javascript"></script>

All these files are in place. When I try using this, I get an error that says "this.p is undefined in line 137" for jquery.jqGrid.min.js. I am using firefox 4. I am not sure where the problem is. Any help would be appreciated.

Thanks,

Abi