Offer a way to download official assets automatically when server and client have different versions (e.g. server is autobuild)
Currently all they'll get is a black map without any explanation and restarting/clearing dlcache won't help because most servers probably don't serve official maps for download.
the bug happens because the git/master has a new map, erbium for example, so the server things, "ah. it's an official map I don't need to server this", however if the client is an older one (not autobuild), it won't have the map.