Issues like these doesn't solve themselves, or at least rarely does.
If you get this message constantly upon several tries it will remain that way since the map froze or crashed, and no matter who you are that enters the given map or which character you are on, what kind of internet or computer you are on, you will face the very same message.
The only way I know of this sorting itself out is when the map itself is restarted or the server has a reboot/restart since it would pretty much do the same thing to the map.
Custom maps can get these at times, and when it happens all you can do is wait until the server is restarted really. The very few times the server is restarted no matter what is when one of the official maps are down, since restarting a server with 800+ players online just because a private map isn't really something wanted nor the most effective way in the length.
It all depends really what kind of situation whether or not the server will get a restart or not. One thing is certain though that your character will work eventually, just that it might take time before it actually works again along with the map.