floating "unknown.jpg"

[editor10]

This little rectangle labelled "Unknown.jpg 6.66 x 8.88 in" now floats above whatever Nisus document I open or create. (see attachment) It is "pinned" to a certain screen position, so that if I move the top document, the rectangle stays put and comes to rest above a different area of the document. It defies all my efforts to select it. I quit Nisus and reopened it, no change. The "gremlin" doesn't appear in other apps.

I used the Finder to search for a file called "Unknown.jpg" without getting any results although Easyfind found a couple of dozen, mostly related to Mail attachments, some in locations in the Library e.g. /Users/cynthiacheney/Library/Mail/V3/4FF7B4BC-C39B-4746-8151-A2271682F570/INBOX.mbox/AA606C2B-6A34-45D8-80AA-ADF8C7717887/Data/9/3/Attachments/39266/2/unknown.jpg. None of the files has the "6.66 x 8.88 in" in its title.


Any ideas on how to get rid of it?

Thanks.

[editor10]

Never mind, after switching to Safari to post this I went back to Nisus and it was gone. Guess the impending presence of Nisus experts frightened it away!