I'm getting an error in Page Management: 

Message: DotNetNuke.Services.Exceptions.PageLoadException: 'drpSkin' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value ---> System.ArgumentOutOfRangeException: 'drpSkin' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value at System.Web.UI.WebControls.ListControl.set_SelectedValue(String value) at DotNetNuke.Modules.Admin.Pages.View.BindTab(Int32 tabId) in c:\work_projects\mintz\www\DesktopModules\Admin\Tabs\Tabs.ascx.cs:line 723 at DotNetNuke.Modules.Admin.Pages.View.CtlPagesNodeClick(Object sender, RadTreeNodeEventArgs e) in c:\work_projects\mintz\www\DesktopModules\Admin\Tabs\Tabs.ascx.cs:line 311

And it's because the skin path is absolute: /Portals/_default/Skins/MySkin/my_file.ascx instead of global: [G]Skins/MySkin/my_file.ascx

I stepped through the code, and found that the page management dropdowns have values of the form "[G]Skins/..." so the attempt to set the selected value fails

This happened as a result of clicking "Copy Design to Children" in the parent tab.  The parent tab's SkinSrc is global.  Why does this happen.

I should note that this is a skin that I developed myself, and I started using it before actually installing it, i.e. I just put the files there and started using them.  Later on I packaged up the files and installed it.  That could be a clue.

TIA,

Joel