[Scribus] Getting rid of an "invisible" frame (out, out damn spot!)

[Gregory Pittman]

In the process a making a document, I must have inadvertently created an 
image frame that is so small I can't see it.
Everytime I go to print (and probably if I tried to make a PDF), I get 
an error that Image 29 on Page 4 is missing its image.

Manage Pictures in Extras doesn't seem to help me, and I can't find 
anyway to search and select the frame so I can delete it.
Anyone else figured this out?
The only thing I can think to do is to edit the .sla file directly.

Greg