Symptom
- When building a web solution that uses Crystal Reports for Visual Studio 2010 the following error is thrown:
The type 'CrystalDecisions.Web.CrystalReportViewer' exists in both
'c:\WINDOWS\assembly\GAC_MSIL\CrystalDecisions.Web\13.0.2000.0__692fbea5521e1304\CrystalDecisions.Web.dll' and
'c:\WINDOWS\assembly\GAC_MSIL\CrystalDecisions.Web\10.5.3700.0__692fbea5521e1304\CrystalDecisions.Web.dll'
Environment
- Crystal Reports for Visual Studio 2010
- VS2010
Cause
- The Source file had a reference to Crystal Reports version 10.5.3700.0 (Crystal Reports Basic for Visual Studio 2008)
Resolution
- Ensure that the source file has identical version of assemblies as the web.config:
<%@ Register Assembly="CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"
Namespace="CrystalDecisions.Web" TagPrefix="CR" %>
See Also
Keywords
CR2010 2010 CR4VS2010 CR4VS VS2010 NET2010 Crystal Reports for .NET Framework 4.0 crforvs 13 , KBA , BI-DEV-NET-SDK , .NET SDK / COM SDK , How To
Product
SAP Crystal Reports, developer version for Microsoft Visual Studio