Smith Cart v3.87.0 DNN version 05.06.02 - Browser IE9

If a customer places an order, creates a new login and let's the session timeout, we receive the following error.

AssemblyVersion: 5.6.2
PortalID: 0
PortalName: EVG Online - Global source for geospatial data, maps, and charts
UserID: 99
UserName: Ordertest
ActiveTabID: 61
ActiveTabName: Online Store
RawURL: /Default.aspx?tabid=61&ctl=Cart&mid=388
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://www.geospatial.com/Default.aspx?tabid=61&ctl=Cart&mid=388
UserAgent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: a381a916-dae3-43b7-95e0-e510fde8931b
InnerException: Object reference not set to an instance of an object.
FileName: c:\inetpub\wwwroot\GEOSPATIAL\DesktopModules\Smith.BuyNow\Cart.ascx.cs
FileLineNumber: 2614
FileColumnNumber: 13
Method: Smith.DNN.Modules.BuyNow.Cart.BuildUPSRequest
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object.at Smith.DNN.Modules.BuyNow.Cart.BuildUPSRequest(String accessKey, String userId, String password) in c:\inetpub\wwwroot\GEOSPATIAL\DesktopModules\Smith.BuyNow\Cart.ascx.cs:line 2614at Smith.DNN.Modules.BuyNow.Cart.GetUPSRates() in c:\inetpub\wwwroot\GEOSPATIAL\DesktopModules\Smith.BuyNow\Cart.ascx.cs:line 2487at Smith.DNN.Modules.BuyNow.Cart.GetShippingRates() in c:\inetpub\wwwroot\GEOSPATIAL\DesktopModules\Smith.BuyNow\Cart.ascx.cs:line 2221at Smith.DNN.Modules.BuyNow.Cart.CalShippingRates() in c:\inetpub\wwwroot\GEOSPATIAL\DesktopModules\Smith.BuyNow\Cart.ascx.cs:line 2163at Smith.DNN.Modules.BuyNow.Cart.btnUpdate_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\GEOSPATIAL\DesktopModules\Smith.BuyNow\Cart.ascx.cs:line 795at System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e)at System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument)at System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)--- End of inner exception stack trace ---
Source:
Server Name: WEB1