I'm running LibreOffice 184.108.40.206 on Ubuntu 14.04. Trying to open any document (at first only with large ones, but now all of them) returns either of the messages below:
General Error. General input/output error opening documents with Libreoffice
Locked for editing by Unknown User
The file is corrupt, should LibreOffice repair it?
LibreOffice 4.1.6, which came with the distribution upgrade, had the same bug.
Deleting the lock files (which I tried) does not fix it.
Sending the "corrupt" files to my email, I can preview their contents without problems.
I use LibreOffice only on Linux.