ODBCng and OpenOffice 2.1

I tried to connect OpenOffice 2.1 Base (win32) via ODBCng to a PG 8.1.5
database.

While it lists schemas, tables and views just fine, I'm unable to edit
data. OO always returns:

The data content could not be loaded
Invalid descritor index
SQL Status: 07009
You tried to set a parameter at position 1 but there is/are only 0
parameter(s) allowed. One reason may be that the property
"ParameterNameSubstitution" is not set to TRUE in the data source.

Where is the problem?

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Regards,
Hannes Dorbath