Crystal Reports 13.0.2000.0 - Invalid report file path. - Windows 7 - Only when published

Hi All

I have ported a vs2008 ASP.net project to vs2010 and my target .Net framework is 4

When trying to view a report when the project is published I get a:-

Server Error in '/***' Application.

Invalid report file path. 
  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: CrystalDecisions.CrystalReports.Engine.LoadSaveReportException: Invalid report file path.

Source Error: 



[No relevant source lines]
  

 Source File:  c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\****\789757cd\86c3df62\App_Web_lrg53oyw.1.cs    Line:  0 

Stack Trace: 



[LoadSaveReportException: Invalid report file path.]
   CrystalDecisions.CrystalReports.Engine.EngineExceptionUtils.DoThrowException(String message, EngineExceptionErrorID id) +40
   CrystalDecisions.CrystalReports.Engine.ExceptionThrower.ThrowEngineException(String messageID, EngineExceptionErrorID id) +164
   CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String filename, OpenReportMethod openMethod, Int16 parentJob) +143
   CrystalDecisions.CrystalReports.Engine.ReportDocument.EnsureLoadReport() +107
   CrystalDecisions.CrystalReports.Engine.ReportDocument.get_ReportDefinition() +51
   ns_SharedMethods.SharedMethods.Close_This_Report(ReportDocument reportDocument) +36
   ns_SharedMethods.SharedMethods.Close_Report(ReportDocument MyReport, CrystalReportViewer CrystalReportViewer1) +15
   Mala_Orders.Master_Page.Orders_Associated_Users.Page_Unload(Object sender, EventArgs e) +18
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnUnload(EventArgs e) +9584962
   System.Web.UI.Control.UnloadRecursive(Boolean dispose) +227
   System.Web.UI.Page.UnloadRecursive(Boolean dispose) +23
   System.Web.UI.Page.ProcessRequestCleanup() +56
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +245
   System.Web.UI.Page.ProcessRequest() +72
   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
   System.Web.UI.Page.ProcessRequest(HttpContext context) +58
   ASP.web_pages_orders_associated_users_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\mala_orders\789757cd\86c3df62\App_Web_lrg53oyw.1.cs:0
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +341
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69

  


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18446 

Everything is working when in the VS2010 environment (design time) 

This error only occurs on my Windows 7 development pc.

The error doesn't occur when the project has been published on my Windows Vista pc (usingexactly the same installer).

Both Windows 7 and Windows Vista pc's have VS2008 and VS2010 installed.

Any ideas why when using the same installer, do I get a "Invalid report file path" error on the Windows 7 and not on the Windows Vista when trying to view a report

on a published web site?

Hope that makes sense.

tia