hey zinga, something is wrong now ..:S, my module isn't detected !!! I don't know what's the problem, i was changing some functions :P but i replaced everything back and still not working ..

Also i found a new thing that you forgot to edit! (my php detected it, but it didn't before!)
Line 461 (myplaza_functions.php):
include_once MYBB_ROOT.'inc/myplaza/class_myplaza_am';

you forgot the .php after the name again lol.

after i get that php error, i fixed the error and then deactivated, activated and i got the same error as the other guy at mybb community:
MySQL error: 1060
Duplicate column name 'money'
Query: ALTER TABLE `mybb_users` ADD ( `money` decimal(10,2) NOT NULL default '10', `purchases` int(10) NOT NULL default '0' );S
lol, i already dropped the columns.
Dropped tables:
ALTER TABLE mybb_users DROP purchases, DROP money
ALTER TABLE mybb_adminoptions DROP canmanageplaza

but, i must drop all columns and tables that are a part of myplaza.

i still get that message, even after i remove that tables and columns

EDIT, after some tries (10/20 tries..) it is working..! but the module is not shown in the admin cp as it was before :S