I'm getting this error when I try to add or edit user accounts. 

I searched for answers -- tried the SQL script posted elsewhere to sync Users and aspnet_Users tables, and verified that the Users table had valid first name, last name, and email address.  I'm desperate!  And I'm out of ideas.  Has anyone had this error and fixed it?  I only have 28 users.  Thank you!

DotNetNuke Version:  04.05.03

Error: Edit User Accounts is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: C:\WebSites\DotNetNuke4\Admin\Users\ManageUsers.ascx.vb(494): error BC30456: 'User' is not a member of 'ASP.admin_users_memberservices_ascx'. ---> System.Web.HttpCompileException: C:\WebSites\DotNetNuke4\Admin\Users\ManageUsers.ascx.vb(494): error BC30456: 'User' is not a member of 'ASP.admin_users_memberservices_ascx'. at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath) at System.Web.UI.TemplateControl.LoadControl(String virtualPath) at DotNetNuke.UI.Skins.Skin.InjectModule(Control objPane, ModuleInfo objModule, PortalSettings PortalSettings) --- End of inner exception stack trace ---