AbleCommerce Shopping Cart Software

I've been getting the following error intermittently (once or twice a day).

Exception of type 'System.Web.HttpUnhandledException' was thrown.; Object reference not set to an instance of an object.

app.log shows:
ERROR 2011-02-01 04:02:43,396 78097348ms Object a - An error has occured at http://www.jellyrivers.com/Basket.aspx/
System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at Layouts_AdminPanel.Page_Init(Object sender, EventArgs e)
at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
at System.Web.UI.Control.OnInit(EventArgs e)
at System.Web.UI.UserControl.OnInit(EventArgs e)
at System.Web.UI.Control.InitRecursive(Control namingContainer)
at System.Web.UI.Control.InitRecursive(Control namingContainer)
at System.Web.UI.Control.InitRecursive(Control namingContainer)
at System.Web.UI.Control.InitRecursive(Control namingContainer)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
--- End of inner exception stack trace ---
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest()
at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.basket_aspx.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

I haven't been able to find anything new and interesting comparing the code for Basket.aspx, AdminPanel.ascx.cs or the scriptlets referred to by basket.aspx from 7.04 to 7.06.

I could use a little help tracking this down.

Thanks,
Jerry

Are you sure that you used the proper upgrade path while doing this upgrade. Here is the upgrade instructions link just to confirm that you followed them http://help.ablecommerce.com/upgrades/a ... _tasks.htm

Secondly did you made any customizations to basket control before upgrade? For example if you have done something custom with basket and now that custom code is unable to work with new changes in AbleCommerce? Finally from admin side edit Basket content scriptlet and see what is the path to Basket conlib control?