[SR-Users] db_flatstore not loading

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