We are seeing the same thing in a DNN 4.0.3 upgrade to DNN 4.5.3.
We changed to classic.ascx as sugested and it fixed the error with iconbar.ascx. Now in Module definitions we see this:
Error: Module Definitions is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: D:\42494-upgradetest\Admin\ModuleDefinitions\ModuleDefinitions.ascx.vb(142): error BC30456: 'Upgrade' is not a member of 'Upgrade'. ---> System.Web.HttpCompileException: D:\42494-upgradetest\Admin\ModuleDefinitions\ModuleDefinitions.ascx.vb(142): error BC30456: 'Upgrade' is not a member of 'Upgrade'. 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 ---
And in Host Srttings:
Error: Host Settings is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: D:\42494-upgradetest\admin\Host\HostSettings.ascx.vb(95): error BC30456: 'Upgrade' is not a member of 'Upgrade'. ---> System.Web.HttpCompileException: D:\42494-upgradetest\admin\Host\HostSettings.ascx.vb(95): error BC30456: 'Upgrade' is not a member of 'Upgrade'. 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 ---
Anyone figure it out?