ASP.NET - crystal y asp .net

Hola, quiero publicar unos reportes con crystal 10 y usando asp .net, pero cuando entro a la pagina me marca el siguiente fallo, alguien tiene idea de q podrias estar faltandome, de antemano muchisimas gracias por su atencion. Saludos

Server Error in '/SVRPWeb' Application.
--------------------------------------------------------------------------------

COM object with CLSID {CF76A644-314B-404D-8D45-F08B51FF990B} is either not valid or not registered.
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: COM object with CLSID {CF76A644-314B-404D-8D45-F08B51FF990B} is either not valid or not registered.

Source Error:

[No relevant source lines]


Source File: c:\WINNT\Microsoft.NET\Framework\v1.1.4322\Temporary ASP.NET Files\svrpweb\b3a3121c\b09d77b4\zh_eb8kd.0.cs Line: 0

Stack Trace:

[COMException (0x80040154): COM object with CLSID {CF76A644-314B-404D-8D45-F08B51FF990B} is either not valid or not registered.]
CrystalDecisions.CrystalReports.Engine.ReportDocument..cctor() +11

[TypeInitializationException: The type initializer for "CrystalDecisions.CrystalReports.Engine.ReportDocument" threw an exception.]
CrystalDecisions.CrystalReports.Engine.ReportDocument..ctor() +0
CrystalDecisions.CrystalReports.Engine.ReportClass..ctor() +5
SVRPWeb.Report1..ctor() in c:\inetpub\wwwroot\svrpweb\report1.cs:21
SVRPWeb.WebForm1..ctor() in c:\inetpub\wwwroot\svrpweb\webform1.aspx.cs:24
ASP.WebForm1_aspx..ctor() in c:\WINNT\Microsoft.NET\Framework\v1.1.4322\Temporary ASP.NET Files\svrpweb\b3a3121c\b09d77b4\zh_eb8kd.0.cs:0

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
System.RuntimeType.CreateInstanceImpl(Boolean publicOnly) +0
System.Activator.CreateInstance(Type type, Boolean nonPublic) +66
System.Web.UI.TemplateControlParser.GetCompiledInstance(String virtualPath, String inputFile, HttpContext context) +164

[HttpException (0x80004005): Failed to create page of type 'ASP.WebForm1_aspx'.]
System.Web.UI.TemplateControlParser.GetCompiledInstance(String virtualPath, String inputFile, HttpContext context) +341
System.Web.UI.PageParser.GetCompiledPageInstanceInternal(String virtualPath, String inputFile, HttpContext context) +43
System.Web.UI.PageHandlerFactory.GetHandler(HttpContext context, String requestType, String url, String path) +44
System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, String path, String pathTranslated, Boolean useAppConfig) +699
System.Web.MapHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() +95
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +173