❔ XDG0031 can't find resource in assembly

I have a pair of derived WPF comboboxes for which I'm getting an error that I can't figure out how to resolve. See below. I suspect the error was from the WPF designer and not a compiler. Can someone explain what I can do? I found nothing on Google.
Severity    Code    Description    Project    File    Line    Suppression State
Error    XDG0031    Could not find the resource "BestChat.IRC.Data.Defs.NickServOpts.resources" among the resources "BestChat.IRC.Data.Defs.Resources.resources" embedded in the assembly "BestChat.IRC.Data", nor among the resources in any satellite assemblies for the specified culture. Perhaps the resources were embedded with an incorrect name.    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\NetworkEditorDlg.xaml    211    
Error    XDG0031    Could not find the resource "BestChat.IRC.Data.Defs.ChanServOpts.resources" among the resources "BestChat.IRC.Data.Defs.Resources.resources" embedded in the assembly "BestChat.IRC.Data", nor among the resources in any satellite assemblies for the specified culture. Perhaps the resources were embedded with an incorrect name.    IRC.Global.View    B:\Contents\Best Chat\Code\IRC\Global\View\NetworkEditorDlg.xaml    231    
Was this page helpful?