String was not recognized as a valid DateTime because the day of week was incorrect.

I am trying to view a webpage and I keep getting the following error:

Server Error in '/MyRes' Application.

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String was not recognized as a valid DateTime because the day of week was incorrect. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.FormatException: String was not recognized as a valid DateTime because the day of week was incorrect.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:

[FormatException: String was not recognized as a valid DateTime because the day of week was incorrect.]
   System.DateTimeParse.Parse(String s, DateTimeFormatInfo dtfi, DateTimeStyles styles) +2228162
   System.DateTime.Parse(String s) +22
   MyRes.controls.CruiseSummary_DuringCruise.GetFormattedDate(String UnFormattedDate) in C:\wip\eCommerceAppDev\MyRes\MyRes\controls\CruiseSummary_DuringCruise.ascx.cs:225
   MyRes.controls.CruiseSummary_DuringCruise.LoadGrid() in C:\wip\eCommerceAppDev\MyRes\MyRes\controls\CruiseSummary_DuringCruise.ascx.cs:396
   MyRes.controls.CruiseSummary_DuringCruise.Page_Load(Object sender, EventArgs e) in C:\wip\eCommerceAppDev\MyRes\MyRes\controls\CruiseSummary_DuringCruise.ascx.cs:69
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +34
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +47
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Control.LoadRecursive() +131
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061

 

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Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832

 

 

Any ideas on how I might get this to stop??  I can view the page on another computer, running the same Vista O/S, same IEv7 and I am running IEv7...there seems to be no logical reason for this....both of my laptops were purchased from Dell at the same time, with the same software, same security settings and yet the XPS M1710 can see the page no problem, but the Inspiron 9400 can't.

 

Thanks in advance for any help.

 

Greg.