[h2]Valve updated the srcds bins, crisis averted.[/h2]
It seems there’s an issue with the latest SRCDS binaries when it comes to Garrysmod clients, crashing them once they’re about to enter the server after loading. I’ve contacted Garry about this and hopefully he’ll push out an update in the distant future.
If you have updated and are experiencing this issue, download these binaries and put them in the appropriate place - http://dl.dropbox.com/u/12722768/gmodbins11052012.rar .