getmap fails on Prospect Park server

I can't enter anymore a game on the Prospect Park server since hiei uploaded a broken map. Every time I re-join the server, it asks me to download the map, e.g. ac_casa. However, this doesn't work. And calling manually getmap doesn't work either, see the attached screenshot. I can restart AC but the issue isn't resolved and it is only happening on that particular server.

UPDATE: My client disconnects after roughly 30 seconds with an enet error message (all players appear to lag according to the scoreboard).
Thanks given by: