SQLCODE -1390 connecting to DB2 64 bit client from 32 bit app

I've got a 32 bit application that connects normally to a DB2 database. (written in C) When I run it on a machine with a DB2 64 bit client, I get a SQLCODE -1390 from connect.

(Win7 64 Bit, DB2 V9.7 c开发者_JAVA技巧lient 64 bit)

Connecting from the command line works (db2 connect to ...) With a 32 Bit DB2 client on the same Win7 64 Bit machine, the connect also works.

Does anyone has an idea how to fix it ? Best regards Oliver

IBM DB2 Fixpack 1 solved the problem !