1670087 - Error when building a solution in VS2010; The type 'CrystalDecisions.Web.CrystalReportViewer' exists...

• 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'

• Crystal Reports for Visual Studio 2010
• VS2010

• The Source file had a reference to Crystal Reports version 10.5.3700.0 (Crystal Reports Basic for Visual Studio 2008)

• 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" %>

• KB - 1544693  - Error BC30560: 'CrystalReportViewer' is ambiguous in the namespace 'CrystalDecisions.Web'
• KB - 1544532  - Error: Could not load file or assembly 'CrystalDecicions.Windows.Forms', version=10.5.3700.0

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

SAP Crystal Reports, developer version for Microsoft Visual Studio