Difference between INFORMIX IDS Server 7.0 and 10.0 ?

Hi, using the following SQL-Commands I copy a informix table-structure and later very fast the table-rows to a MS-access DB: SELECT * INTO tab1 FROM [ODBC;DSN=InfomixDB;UID=myINF;PWD=myPWD;].tab1; INSERT INTO tab1 SELECT * FROM[ODBC;DSN=InfomixDB;UID=myINF;PWD=myPWD;].tab1; source: INFOMIX IDS Server 7.0 destination : MS Access 2000 ODBC-Driver : INTERSOLV 3.11 32-Bit INFORMIX 9 If I change the source DB from INFORMIX IDS Server 7.0 to INFOMIX IDS Server 10.0 for both commands I get the error-message: reserved error : there is no message for this error (message from MS-query). I changed the field-types but the result is the same. The table dont includs a serial field. My Question: What is the difference between Version 7 and 10? Who knows a solution for my problem? michael