Crystal reports error in asp.net vb where no crystal reports needed
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I am getting following 7 errors in my asp.net(vb) website.They occurred after I added reference to Microsoft Office 12.0 Object Library as per [this][1] SO post in an attempt to read individual excel sheet cells. Now the whole website fails to build. The most surprising thing about this is that  why I am getting an error related to crystal report when I do not need it in my project?

Here are the 7 errors:

    Error	Unknown server tag 'CR:CrystalReportViewer'.	C:\Users\ssaa\Documents\Visual Studio 2010\WebSites\Dpp2012\aspnet_client\system_web\4_0_30319\crystalreportviewers13\preview.aspx	130	

    Error	Could not load file or assembly 'CrystalDecisions.Web, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.	C:\Users\ssaa\Documents\Visual Studio 2010\WebSites\Dpp2012\aspnet_client\system_web\4_0_30319\crystalreportviewers13\preview.aspx	3	

    Error	Could not load file or assembly 'CrystalDecisions.ReportSource, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.	C:\Users\ssaa\Documents\Visual Studio 2010\WebSites\Dpp2012\aspnet_client\system_web\4_0_30319\crystalreportviewers13\preview.aspx	6	

    Error	Could not load file or assembly 'CrystalDecisions.ReportAppServer.XmlSerialize, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.	C:\Users\ssaa\Documents\Visual Studio 2010\WebSites\Dpp2012\aspnet_client\system_web\4_0_30319\crystalreportviewers13\preview.aspx	7	

    Error	Could not load file or assembly 'CrystalDecisions.ReportAppServer.ObjectFactory, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.	C:\Users\ssaa\Documents\Visual Studio 2010\WebSites\Dpp2012\aspnet_client\system_web\4_0_30319\crystalreportviewers13\preview.aspx	8	

    Error	Could not load file or assembly 'CrystalDecisions.ReportAppServer.Controllers, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.	C:\Users\ssaa\Documents\Visual Studio 2010\WebSites\Dpp2012\aspnet_client\system_web\4_0_30319\crystalreportviewers13\preview.aspx	4	

    Error	Could not load file or assembly 'CrystalDecisions.CrystalReports.Engine, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.	C:\Users\ssaa\Documents\Visual Studio 2010\WebSites\Dpp2012\aspnet_client\system_web\4_0_30319\crystalreportviewers13\preview.aspx	5	


Any help would be highly welcome!

  [1]: http://stackoverflow.com/questions/2407293/how-to-read-excel-cell-from-vb-net