Help: Reverse engineering SQLServer database? Duplicate relationship error

Howdy,

Trying to assist a WO convert (well, possibly) reverse engineer a MS
SQL Server database into EOModeller.

Using the type 4 drivers from Microsoft.

Choosing just two tables (Person and Address)

Yields an error:

Connection Error - addrelationship:: duplicated relationship name:
address

Any ideas?  Same error when tested with two simple tables and a
relationship.

Does he need a plugin for SQL Server or does WO handle it out of the
box?

Any suggestions gratefully accepted and past on ...

Cheers,
Ashley Aitken.

PS I was connecting to his MS SQL Server from a Mac OS X machine with
WO 5.1.3