[Serusers] val2str(): Destination buffer too short , pls help

hi, i have met the same problem with latest version as Peter has met. i loaded the latest version today. In ser.cfg, when I wrote: modparam("usrloc", "db_mode", 1), the user can not registr at all. when I wrote: modparam("usrloc", "db_mode", 2) the user can register but for a moment the debug information shows as the fellow: ---------------------------------------------------------------- entering route[2] - user not online val2str(): Destination buffer too short print_values(): Error while converting value to string submit_query(): Column count doesn't match value count at row 1 insert_row(): Error while submitting query db_insert_ucontact(): Error while inserting contact wb_timer(): Error while inserting contact into database ---------------------------------------------------------------- And the Location table of ser database have no records at all. After a few minutes SER server is down. the debug information shows as the fellow: ---------------------------------------------------------------- val2str(): Destination buffer too short val2str(): Destination buffer too short child process 10639 exited by a signal 11 core was generated INFO: terminating due to SIGCHLD INFO: signal 15 received INFO: signal 15 received INFO: signal 15 received INFO: signal 15 received INFO: signal 15 received INFO: signal 15 received INFO: signal 15 received INFO: signal 15 received INFO: signal 15 received INFO: signal 15 received ----------------------------------------------------------------------- where is wrong?