Crystal Report: Logon failed

[Ben]

Hi

We have been developing an intranet using VB .NET displaying crystal
reports.

We repeatedly receive the error below on both the development machine and
the deployment server:

I have read the information on many sites and followed instructions with no
luck, any help would be much appreciated.

Thanks
B
Logon failed.
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.LogOnExcept ion:
Logon failed.

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:

[LogOnException: Logon failed.]
.I(String , EngineExceptionErrorID )
.D(Int16 , Int32 )
.C(Int16 )
CrystalDecisions.CrystalReports.Engine.FormatEngin e.GetPage(PageRequestContext
reqContext)
CrystalDecisions.ReportSource.LocalReportSourceBas e.GetPage(PageRequestContext
pageReqContext)
CrystalDecisions.Web.ReportAgent.u(Boolean n)
CrystalDecisions.Web.CrystalReportViewer.OnPreRend er(EventArgs e)
System.Web.UI.Control.PreRenderRecursiveInternal()
System.Web.UI.Control.PreRenderRecursiveInternal()
System.Web.UI.Control.PreRenderRecursiveInternal()
System.Web.UI.Page.ProcessRequestMain()