Case sensitivity in strings
 

Okay, so after testing around I've found out what Zodiac's problem is.

Players are able to change the capitals in their accounts.
I can log in with my account as yen, Yen, yEn, YeN, yEN, or YEn. All of them will work.
If I have something like: this.array = {"Yen","Stefan","(npc-server)"} and I do this.array.index(player.account), unless my account is Yen it will return -1
If my account is yEn, it will return a -1.
This is bugging up parties, trade, ect.

I can fix it by converting all accounts to lowercase when they're received, but is it mean't to act like this?

Just ignore the account name sent with the trigger by the client, never trust clientside data. On serverside you can also do account = findplayer(account).account to fix it.

^^ Thanks.

Whyd you use another account to post o_o