I've been running this plugin for over a year on my dedicated server without issue. I did have some problems/crashes using this plugin after the The Last Stand update, but that was due to bugs/problems with the L4D2 update. After updating the dedicated server using...
steamcmd.exe +login anonymous +force_install_dir "<path_to_l4d2ds>" +app_update 222860
...and updating SourceMod to 1.10, the problems/crashes went away.