System Data Dataset Cannot Indexed Because It Has No Default Property

I have built a site and worked fine for me, when I passed to a collegaue to deploy into another site he gets the message in subject.

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
If Not getQueryString("post") = 0 Then
postID = Request.QueryString("post")
BlogAdmin1.Buttontext = "Edit Blog"
Dim MyCommand As SqlCommand
Dim myAdapter As SqlDataAdapter
Dim ds As DataSet = New DataSet
Dim myUpdateconnection As SqlConnection = New SqlConnection(System.Configuration.ConfigurationManager.AppSettings("conn"))
MyCommand = New SqlCommand("ADMIN_BLOG_SELECT_POSTBYID", myUpdateconnection)
MyCommand.CommandType = CommandType.StoredProcedure
MyCommand.Parameters.Add(New SqlParameter("@postID", SqlDbType.Int))
MyCommand.Parameters("@postID").Value = postID
MyCommand.Connection.Open()
Try
myAdapter = New SqlDataAdapter(MyCommand)
myAdapter.Fill(ds, "postData")
Catch exp As SqlException
Response.Write(exp.ToString())
End Try
If Not ds Is Nothing AndAlso Not ds.Tables(0) Is Nothing AndAlso ds.Tables(0).Rows.Count > 0 Then
BlogAdmin1.BlogTitle = nullToStr(ds.Tables(0)(0)("title"))
BlogAdmin1.BlogBody = nullToStr(ds.Tables(0)(0)("body"))
BlogAdmin1.BlogCategory = nullToInt(ds.Tables(0)(0)("category"))
End If
MyCommand.Connection.Close()
LoadData()
Else
Response.Redirect("/admin/blogs.aspx", False)
End If
End If
End Sub

It errors here

BlogAdmin1.BlogTitle = nullToStr(ds.Tables(0)(0)("title"))