Hi

I'd like to test db_flatstore module at 3.1 to write accounting data. The module is not loading though. The config is really simple:
loadmodule "db_flatstore.so"
modparam("acc", "db_url", "flatstore:/var/log/kamailio/cdr")

I'm getting this error:
0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_bind_api> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_bind_api> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [db.c:210]: using export interface to bind db_flatstore
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_use_table> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_use_table> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_init> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_init> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_close> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_close> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_query> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_query> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_fetch_result> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_fetch_result> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_raw_query> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_raw_query> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_free_result> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_free_result> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_insert> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_insert> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_delete> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_delete> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_update> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_update> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_replace> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_replace> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_last_inserted_id> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_last_inserted_id> in module <db_flatstore> not found
 0(27360) DEBUG: <core> [sr_module.c:631]: find_export_record: <db_insert_update> not found
 0(27360) DEBUG: <core> [sr_module.c:684]: find_mod_export: <db_insert_update> in module <db_flatstore> not found
 0(27360) ERROR: <core> [db.c:79]: module db_flatstore does not export db_use_table function
 0(27360) ERROR: acc [acc.c:333]: bind_db failed
 0(27360) ERROR: acc [acc_mod.c:459]: failed...did you load a database module?
 0(27360) ERROR: <core> [sr_module.c:875]: init_mod(): Error while initializing module acc (/usr/local/kamailio-3.1/lib/kamailio/modules_k/acc.so)
ERROR: error while initializing modules

Any idea?

Thanks in advance

Javier