My b2evolution Version: Not Entered

I'm pretty sure they weren't there yesterday, but wow I can't think of anything I did that would lead them to being there today.

What I mean is that on my Files tab the top line shows me that there is a directory named .evocache. On the right side of the "name" column I have a clickable link to view the contents of the folder in a new window, and an "exclamation info" icon with a tool-tip that says "<<.evocache>> is not a valid directory name".

If I click the link I get a new window that shows more folders that are not properly named, which makes sense once you get past the first instance of showing the .evocache folder as if it was something I created with a bad name.

Any clues before I start randomly guessing at what file or folder I changed that caused this? Possibly a setting? I've been playing with settings lately to see what there was to see so maybe that's it?