I am doing a bin deployment on a web site for the following assemblies... Telerik.Windows.Documents.Core Telerik.Windows.Zip Telerik.Windows.Documents.Fixed Telerik.Windows.Documents.Flow Telerik.Windows.Documents.Flow.FormatProviders.Pdf Telerik.Windows.Documents.Spreadsheet Telerik.Windows.Maths Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml Telerik.Windows.Documents.Spreadsheet.FormatProviders.Pdf I recently used the upgrade wizard, and it successfully updated the versions for these assemblies, but it did not update the version numbers in the Web.config. I manually removed the version number completely from Web.config, and it seems to work fine.