[Serusers] postgres error while starting

Hi, I tryed to run ser with postgresql but I have problem... Here is part of ser.cfg loadmodule "/usr/local/lib/ser/modules/postgres.so" loadmodule "/usr/local/lib/ser/modules/usrloc.so" loadmodule "/usr/local/lib/ser/modules/auth.so" loadmodule "/usr/local/lib/ser/modules/auth_db.so" modparam("usrloc", "db_mode", 0) modparam("auth_db", "calculate_ha1", yes) modparam("auth_db", "password_column", "password") modparam("rr", "enable_full_lr", 1) modparam("auth_db", "db_url", "sql://ser:mypass@localhost:5432/ser") When I start ser in debug mode - ser -ddddddddddddddddddddddddddddd I got at the end this error: 0(0) auth_db module - initializing 0(0) find_mod_export: <db_use_table> in module sql not found 0(0) bind_dbmod: Module sql does not export db_use_table function 0(0) ERROR: auth_db_bind: unable to bind to the database module 0(0) init_mod(): Error while initializing module auth_db ERROR: error while initializing modules Why "module sql not found"?! I changed modparam("auth_db", "db_url", "postgres://ser:mypass@localhost:5432/ser") and I got error message 0(0) find_mod_export: <db_use_table> in module mysql not found !!? Any suggestions?