I often open LibreOffice files directly from Evolution, which puts them in a temporary directory which is purged after reboot. On an unclean shutdown, LibreOffice recovery will trigger. I then walk through the following steps:
* Recovery! Would you like to recover your files? [Start recovery →]
* Warning dialog: /home/daniels/.cache/evolution/tmp/foo.xls does not exist. [OK]
* Question dialog: Document file foo.xls is locked for editing by: Unknown user. Open document read-only or open a copy for editing. [Open Read-only] [Open Copy] [Cancel]
Both 'open' options obviously fail since the file has been obliterated. Seems like recovery should detect this case and present a slightly less confusing UI.
I'm on Fedora 20, though this doesn't really seem distro-specific.
Thanks for reporting!
Although this, it's already reported in Bug 57443. Luckily this should be fixed in 4.2.0 (based on my own test). See bug report.
*** This bug has been marked as a duplicate of bug 57443 ***