After updating nibblebill conf and freeswitch I've mentioned the following error: [ERR] mod_nibblebill.c:403 Error running this query: [SELECT cash AS nibble_balance FROM clients WHERE accountcode='1' Running isql from the command line with the same sql gives perfect answer: [root@sip log]# isql billing +---------------------------------------+ | Connected! | | | | sql-statement | | help [tablename] | | quit | | | +---------------------------------------+ SQL> SELECT cash AS nibble_balance FROM clients WHERE accountcode=1 +-------------------------+ | nibble_balance | +-------------------------+ | -3126.29999017714 | +-------------------------+ SQLRowCount returns 1 1 rows fetched SQL> What could be the problem? Any ideas?