After this latest Counter-Strike Source Update 05-22-12 your plugin get broken for me, i get this error in console:
[SM] Native "CreateEntityByName" reported: "CreateEntityByName" not supported by this mod
[SM] Displaying call stack trace for plugin "autorespawn.smx":
[SM] [0] Line 93, /home/groups/alliedmodders/forums/files/7/9/7/8/6/83684.attach::RespawnClient()
Version i use:
mmsource-1.8.7-windows
sourcemod-1.3.9-hg3154-windows