[Tomer!.$]

I somewhat believe you just copied some of the functions from some other script, but you forgot to copy all the necessary things.
You are using "SavePlayer(i);" but yet I can't see any SavePlayer(playerid); function..
You used "UpdateConfig();" yet I can't see any public/stock/whatever of UpdateConfig..
And the list goes on and on..

Therefore, these are undefined symbols.