Voyager connection problem

Hi guys. So right now we're in the middle of migration from xi r2 to 3.1. In the 3.1 CMC, when we try to create new voyager connection, this error come out. "No cubes we found.Verify that you have permission to view cubes on the database server and try again".

We're using ms sql 2000 analysis services. I'm using the correct windows credential to log in. There credential also have been set to view and edit all the cubes, but the error message still come out. Is there any suggestion u guys can suggest me?