The plugin seems to work as advertised. I am seeing the following in my error logs.
Code:
L 09/07/2012 - 09:07:24: [SM] Native "UnhookEvent" reported: Invalid hook callback specified for game event "player_spawn"
L 09/07/2012 - 09:07:24: [SM] Displaying call stack trace for plugin "buyzonesimulator.smx":
L 09/07/2012 - 09:07:24: [SM] [0] Line 137, buyzonesimulator.sp::OnMapEnd()
L 09/07/2012 - 09:24:58: [SM] Native "UnhookEvent" reported: Invalid hook callback specified for game event "round_end"
L 09/07/2012 - 09:24:58: [SM] Displaying call stack trace for plugin "buyzonesimulator.smx":
L 09/07/2012 - 09:24:58: [SM] [0] Line 139, buyzonesimulator.sp::OnMapEnd()
Update: I saw a new version posted this morning; will test again.