Session Variables are null

[liunx]

I have a login page that calls dologin.aspx. This page sets the session variables using the following code.

if (lobj_dataset.Tables[0].Rows.Count >0)
{
Session["UserID"]=lobj_dataset.Tables[0].Rows[0]["ID"];
Session["Username"]=lobj_dataset.Tables[0].Rows[0]["Username"];
Session["FullName"]=Convert.ToString(lobj_dataset.Tables[0].Rows[0]["FullName"]).Trim();
Session["ARView"]=lobj_dataset.Tables[0].Rows[0]["ARView"];
Session["Mapping"]=lobj_dataset.Tables[0].Rows[0]["Mapping"];
Session["MenuUpdates"]=lobj_dataset.Tables[0].Rows[0]["MenuUpdates"];
Session["RootLevel"]=Convert.ToInt32(lobj_dataset.Tables[0].Rows[0]["RootLevel"]);
Session["AccountManager"]=lobj_dataset.Tables[0].Rows[0]["AccountManager"];
Session["gridType"]=0;
Session["arType"]="%";
Session["sortType"]="Priority, Company";
Session.Timeout=60;
Response.Redirect("default.aspx");
Response.Write(Session["arType"]);
}
else
{
Response.Redirect("login.aspx");
}
lobj_connection.Close();


I then use the session variables in default.aspx which uses a page in a different folder. I'm pretty new at this session stuff, so I was wondering if anybody can tell me if I'm doing something wrong?

Thanks,
Josh