When I try to open LibreOffice, I get the following error:

> Either another instance of LibreOffice is accessing your personal settings or your personal settings are locked.

> Simultaneous access can lead to inconsistencies in your personal settings. Before continuing, you should make sure user 'macowner' closes LibreOffice on host 'new-host.home'.
    
> Do you really want to continue?

I don't know why this started.  Also, there is only one account on this computer, I changed its name from "macowner" to its current name over a month ago.  I'm running LibreOffice 4.1 and OS X 10.7.5.

How do I remove this error?