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POHow to fix asp.net runtime error
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So i have a page that is suppose to display various reports. This works fine when i run the application with the old reports. However when i run the application with new versions of the reports i get this error. <pre><code> ASP.NET runtime error: The base class includes the field 'reportViewer', but its type (CrystalDecisions.Web.CrystalReportViewer) is not compatible with the type of control (CrystalDecisions.Web.CrystalReportViewer). </code></pre> From what I've gathered looking for a solution for this error, it has something to do with CR(Crystal Reports) running either a different or newer version. However From what i know, i haven't changed or updated CR. The versions i have stored in my web.config for the references i am using with crystal reports are: <pre><code><add assembly="CrystalDecisions.Web, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.Shared, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.ReportSource, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.Enterprise.Framework, Version=12.0.1100.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.Enterprise.Desktop.Report, Version=12.0.1100.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.ReportAppServer.Controllers, Version=12.0.1100.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.CrystalReports.Engine, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.ReportAppServer.DataDefModel, Version=12.0.1100.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.Enterprise.InfoStore, Version=12.0.1100.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> <add assembly="CrystalDecisions.Enterprise.Viewing.ReportSource, Version=12.0.1100.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/> </code></pre> A solution i was given by the previous developer was to modify the .csproj file manually and replace the version # with the correct one which is version 12. Although, this leads me to having an error with VS to be unable to locate the System.Web.Extentions.dll. So what i would like to know, is what exactly is wrong with my application and how can i rectify the problem.
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<c#><asp.net>
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How to fix asp.net runtime error
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1. CODid you modify the target framework version when adjusting the csproj contents? That can lead for an inability to load System.* DLLs.
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