Somehow I have linked one file to another in Sketchup so in Layout, Document Setup it shows a missing reference to this file. I wish to just remove this reference completely but I cannot. I have tried purging it, unlinking it, renaming the actual linked file, etc. and the reference remains no matter what I do.
How do I remove this reference to this file in Layout?
Also note that selection of a reference in a list of references causes selection of referenced items in a document (it may help to find inserted object in a document).