Unknown limewire.props entry

[secret_squirrel]

I have a new entry in my limewire.props file LAST_FILECHOOSER_DIR = It appeared recently and I don't know why. There is nothing designated after the =, like the the entry for where my shared files go... Can anyone tell me what this entry is there for and what checkbox or setting I may have checked or unchecked to get this entry there? Thanks