Navision Native DB and ODBC

Hi, I have problem with connecting to Navision Native DB thought ODBC. I wrote simple program that connects to Navision DB thought ODBC, it works fine. Then - extended stored procedure for SQL server, but it throws exception then connecting DB dbconnect->OpenEx("Database=C:\\Navision Attain\\Client\\database.fdb;RD=No;DSN=NavisionDB;CSF=No;CN=CRONUS Lithuania u.a.b.;CC=Yes;OPT=Text;CD=No;ML=1063;SERVER=N;BE=Yes;IT=All Except DOT;PPath=C:\\Navision Attain\\Client;QTYesNo=Yes;RO=No",CDatabase::noOdbcDialog); Exception: ex->m_strError == -1 ex->m_strError == „ISAM error“ What does it mean? And more, if connect string is “MaxBufferSize=2048;FIL=MS Access;DSN=UsersDB;PageTimeout=5;UID=admin;DBQ=D:\\WORK\\JAVA\\DATABASE\\Users.mdb;DriverId=25” – Access DB then every thing works fine. I don’t get it, what’s wrong? [?]