Hi, 

I am trying to update my webproject from infragistic asp.net 15.1 to 16.1, but when I run the Version Utility Iam getting an error, here is the log

01:46:20: Running User Interface Version 16.1.20161.1000
01:46:20: Gathering volume and assembly information.
01:46:20: Could not locate registry entry Software\Microsoft\.NETCore\v4.5\AssemblyFoldersEx where we look for installed products.
01:46:48: Could not locate registry entry Software\Microsoft\.NETCore\v4.5\AssemblyFoldersEx where we look for installed products.
01:46:48: Could not locate registry entry Software\Microsoft\.NETCore\v4.5\AssemblyFoldersEx where we look for installed products.
01:46:48: Could not locate registry entry Software\Microsoft\.NETCore\v4.5\AssemblyFoldersEx where we look for installed products.
01:49:29: C:\Test ProjectseCare_Sln_20160707\ECareWeb\web.config has been backed up.
01:49:29: Replacement for Infragistics4.Web.v16.1 Version=16.1.20161.2044 is Infragistics4.Web.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.Documents.Reports.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.Documents.Reports.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.Documents.Excel.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.Documents.Excel.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.WebDataInput.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.WebDataInput.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.Shared.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.Shared.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.Misc.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.Misc.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.WebSchedule.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.WebSchedule.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.WebScheduleDataProvider.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.WebScheduleDataProvider.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.WebHtmlEditor.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.WebHtmlEditor.v16.1 Version 16.1.20161.2044.
01:49:29: Replacement for Infragistics4.WebUI.Documents.Core.v16.1 Version=16.1.20161.2044 is Infragistics4.WebUI.Documents.Core.v16.1 Version 16.1.20161.2044.
01:49:29: C:\Test Projects\eCare_Sln_20160707\ECareWeb\CaseManagerMembers.aspx has been backed up.
01:49:29: Object reference not set to an instance of an object.
01:49:29: at Infragistics.VersionUtilitySupport.Core.File.Types.WebConfigFile.IsDirectiveInConfig(String nameSpace, String assembly)
at Infragistics.VersionUtilitySupport.Core.File.Types.WebConfigFile.AddRegisterDirective(String assemblyToAdd, String tagPrefixToAdd, String namespaceToAdd)
at Infragistics.VersionUtilitySupport.Core.File.Types.WebFile.UpdateRegisterDirective(XmlNode node, Match mt, Match mn, String s, String oldName, Match versionMatch)
at Infragistics.VersionUtilitySupport.Core.File.Types.WebFile.Upgrade(String rootDirectory)
at Infragistics.VersionUtilitySupport.Core.File.Types.AdditionalFiles.Update(FileSystemInfo workingDirectory)
at Infragistics.VersionUtilitySupport.Core.File.Types.DirectoryType.Upgrade(String rootDirectory)
at Infragistics.VersionUtilitySupport.Core.SourceChanger.Upgrade()

I choose in the upgrade options to register asp.net control prefix in web.config and register asp.net control assemblies in web.config too.

Any help?