When I joined "Allan103's TF2 Dustbowl" server, RTB re-downloaded a copy of Demian's Slate Edits that I'd got earlier that day (restarted Blockland inbetween though) and replaced the working version with the content-only zip.
I went to go on my friend's Army RP server, and I got kicked for not having the right version of texture files on the Bedroom map.