Hi,

We are runing DNN 5.6.1. Professional. When we click on Form and List Configuration we get an error (see below). Further everythings works fine!

Error: is currently unavailable.

DotNetNuke.Services.Exceptions.ModuleLoadException: D:\wwwroot\dotnetnuke\DesktopModules\UserDefinedTable\configuration.ascx(46): error BC30561: 'DataType' is ambiguous, imported from the namespaces or types 'System.ComponentModel.DataAnnotations, DotNetNuke.Modules.UserDefinedTable'. ---> System.Web.HttpCompileException: D:\wwwroot\dotnetnuke\DesktopModules\UserDefinedTable\configuration.ascx(46): error BC30561: 'DataType' is ambiguous, imported from the namespaces or types 'System.ComponentModel.DataAnnotations, DotNetNuke.Modules.UserDefinedTable'. at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath) at DotNetNuke.UI.ControlUtilities.LoadControl[T](TemplateControl containerControl, String ControlSrc) at DotNetNuke.UI.Modules.ModuleHost.LoadModuleControl() --- End of inner exception stack trace ---

Is there anyone who can help us? Thanks.