[Arkshine]

"osx addons/podbot/podbot_mm.dylib" should be okay. Unless there is no such file in this folder. Also make sure plugins.ini is well named this way and not like plugins.ini.txt.
What metamod version do you use?

Try to add "meta_debug 8" for example in server.cfg.
Start the server, and see if you see interesting message from metamod.
If no, type "meta refresh", it should give some useful informations.