[NullReferenceException: Object reference not set to an instance of an object.]
_book.GetZimmerStars(ZimmerCustomer zimmer) in c:\web\BookitweekendCoIL\book.aspx.cs:582
_book.BindPageControls() in c:\web\BookitweekendCoIL\book.aspx.cs:342
_book.Page_Load(Object sender, EventArgs e) in c:\web\BookitweekendCoIL\book.aspx.cs:328
System.Web.UI.Control.OnLoad(EventArgs e) +107
System.Web.UI.Control.LoadRecursive() +89
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1532