I am installing a FIM environment which will synchronization Active Directory contacts to a few different Lotus Domino mail address books.  

Using the the latest Hotfix version 5.3.1003.0 (KB2932635) of the Lotus Domino connector, I was able to configure a connector to the first Lotus Domino server (8.5.3 FP6) successfully.  

The next Lotus Domino server (9.0.1 FP3 HF42) allows a connection, and returns information on "Global Parameters", but when I navigate to "Configure Partitions and Hierarchies" the directory partitions list is empty and if I press the "Refresh" button, I get an exception "An error was encountered while refreshing domains: InvalidArgument=Value of '0' is not valid for 'index'. Parameter name: index"  as seen here:

I've check the Application and Forefront Identity Manager event logs , but there are no events corresponding to this exception. 

Also I can connect to this server using the Domino Notes Client 8.5 from the FIM Sync server and navigate the address book without issue.

I'm looking for suggestions on what to check next or how to get the partitions list populated to get past this page and complete the connector configuration.