Cannot access SS2 Project using SS4

Hi,

I'm helping a customer to move from Bentley Map for MicroStation SS2 to SS4 using a Oracle Spatial data source.

I guess there might be some changes so I upgraded the GSA xml and exported the workspace. When I try to open the defined graphical source using Map Interoperability nothing happens. No error, no nothing except the named of the graphical source displayed. Same thing with the saved .orax files.

I can still connect using the SS2 client so obviuosly not very much has changed in the xml files.

Any ideas what might be missing? Any new requirements on the database, tables, indexes etc?

/Krister