Right-click OO dock icon = Recents list
 

When I right-click on the OO dock icon I get a list of recently-opened outlines. Some of them seem to be dead links - I click on them and nothing opens. (Right now, 5 out of 10 won't open.) I go to The Menu Bar, select File:Open Recent, click on the names of the same outlines that wouldn't open from the dock's contextual menu and the same outlines open just fine.

So that's Question #1. Why do some files listed in the dock icon's contextual menu not open?

Question #2: How do I clear that contextual menu? I know how to clear the File:Open Recents menu, and that works. But the dock icon's contextual menu stays populated, and I can't get it to clear no matter what I try.

Any ideas?