Version 1.12, from the 27th of May 2016.
UPDATE 8th of June: I've tried reinstalling VCRedist and DXSetup, as described in the troubleshooting guide. I've also tried "The Purge", to no effect. I'm getting no error whatsoever, and yet the game just doesn't seem to notice the additional maps in its install directory.
UPDATE 2: Looks like a recent update have fixed my map issue! 