Navision 3.56 and ODBC on W2K

We use Navision 3.56 and have been provided with ODBC driver Ver. When I want to configure the Navision ODBC driver the ODBCAD32 crashes when I click the “company” button. (Dialog states: The command in “0x007c99a2” points to memory in “0xffffffff”. The procedure “written” cannot be processed (translated from Germany)). The workstation runs Windows 2000 SP1. Can anybody help? Thanks