Crystal Reports COM Error

Question

I have a Crystal Report that I load and run from an ASP.Net Web Application. It works fine on my machine. However when the code is deployed to the servers, intermittently (does not happen everytime), I receive the following exception:
System.IO.FileLoadException: Retrieving the COM class factory for component with CLSID {XXX}  failed due to the following error: 8007045a.
at CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.CreateRptDoc()
at CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper..ctor()
at CrystalDecisions.CrystalReports.Engine.ReportDocument.Initialize()
at CrystalDecisions.CrystalReports.Engine.ReportDocument..ctor()
at CrystalDecisions.CrystalReports.Engine.ReportClass..ctor()
When I search for this error I am not able to find the exact cause of the COM error 8007045a or the System.IO.FileLoadException. But many people have encountered other COM Errors with Crystal Reports and have suggested changing the Project properties -> Build -> Platform Target to x86 from 'Any CPU'.
Is this indeed the action to be taken for the COM error 8007045a or the System.IO.FileLoadException too?
One of the folks suggested the following: It is a low-level Windows error, not a COM error. The DllMain() entrypoint of one of the unmanaged code DLLs used by CR returned FALSE.
Any suggestions here?
Thanks in advance
Vikas
Edited by: vikasmanghani on Dec 22, 2011 3:53 PM

Answer 1

Hi Don
The CR version is Crystal Reports 2008 SP3.
OS - Windows Server 2003
IIS - IIS 6 (I am not entirely sure, but most likely it is IIS 6).
Does it matter, if I instantiate the ReportDocument derived class on a separate thread. For e.g.
Main Thread:
MyReportClass rpt;
Thread t1 = new Thread(InitRpt);
t1.IsBackground = true;
t1.Start();
//perform some additional work
t1.Join();
Thread t1:
rpt = new MyReportClass();
rpt.FileName = "";
rpt.Load();
Also the BuildAction property for the report is set to Content.
As an aside, I noticed another error on a different server:
System.Runtime.InteropServices.COMException (0x80000003): Retrieving the COM class factory for component with CLSID {D7F5D7C3-B06C-4CAC-BC47-A06E66D2EE9B} failed due to the following error: 80000003.
   at CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.CreateRptDoc()
   at CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper..ctor()
   at CrystalDecisions.CrystalReports.Engine.ReportDocument.Initialize()
   at CrystalDecisions.CrystalReports.Engine.ReportDocument..ctor()
   at CrystalDecisions.CrystalReports.Engine.ReportClass..ctor()
For this COM Error 80000003, I was able to search on SAP forums and locate the following:
1. Some people have asked to re-register clientdoc.dll using regsvr32.
2. Some people have suggested rebooting the server.
3. Some have suggested running in 32-bit mode. I am not sure if this server is 64-bit or 32-bit.
It would be great if you could help me with this one too.
Thanks in advance.
Regards
Vikas
Edited by: vikasmanghani on Dec 24, 2011 4:38 AM
Edited by: vikasmanghani on Dec 24, 2011 4:42 AM