ASP NET 2 0 / Crystal Reports

[C]

Hi,

I have an ASP.NET Page that renders a Crystal Report as PDF.

This has always worked.

On our System Test Web Server we now get below error when the user tries to
generate the PDF.

NOTE: This does not happen on my machine.
If I debug the code on the System Test Web Server it works fine. It gives
the error when I access the application using the URL only.

Any ideas? Good old Crystal!!

Invalid class string
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.Runtime. InteropServices .COMException: Invalid
class string

Source Error:
Line 116:
Line 117: // Load the report
Line 118: crReportDocumen t.Load(fileOutp utPath);
Line 119:
Line 120: //declare the tables
Source File: D:\My Documents\Work\ Project Karma\WAP\Proje ct Karma\Project
Karma\bt_web_sr f\home\opportun ity_detail.aspx .cs Line: 118

Stack Trace:
[COMException (0x80004005): Invalid class string
]

CrystalDecision s.ReportAppServ er.ClientDoc.Re portClientDocum entClass.Open(O bject& DocumentPath, Int32 Options) +0
CrystalDecision s.ReportAppServ er.ReportClient DocumentWrapper .Open(Object&
DocumentPath, Int32 Options) +87

CrystalDecision s.ReportAppServ er.ReportClient DocumentWrapper .EnsureDocument IsOpened() +279

[Exception: Load report failed.]

CrystalDecision s.ReportAppServ er.ReportClient DocumentWrapper .EnsureDocument IsOpened() +341
CrystalDecision s.CrystalReport s.Engine.Report Document.Load(S tring
filename, OpenReportMetho d openMethod, Int16 parentJob) +870
CrystalDecision s.CrystalReport s.Engine.Report Document.Load(S tring
filename) +73
bt_web_srf.home .opportunity_de tail.GenerateCu stomerOutputRep ort() in
D:\My Documents\Work\ Project Karma\WAP\Proje ct Karma\Project
Karma\bt_web_sr f\home\opportun ity_detail.aspx .cs:118
bt_web_srf.home .opportunity_de tail.Page_Load( Object sender, EventArgs e)
in D:\My Documents\Work\ Project Karma\WAP\Proje ct Karma\Project
Karma\bt_web_sr f\home\opportun ity_detail.aspx .cs:76
System.Web.Util .CalliHelper.Ev entArgFunctionC aller(IntPtr fp, Object o,
Object t, EventArgs e) +15
System.Web.Util .CalliEventHand lerDelegateProx y.Callback(Obje ct sender,
EventArgs e) +34
System.Web.UI.C ontrol.OnLoad(E ventArgs e) +99
System.Web.UI.C ontrol.LoadRecu rsive() +47
System.Web.UI.P age.ProcessRequ estMain(Boolean
includeStagesBe foreAsyncPoint, Boolean includeStagesAf terAsyncPoint) +1061