mysqldbcompare - ERROR: The list of objects differs among database
Check that you have enough permission on both databases to see and select your tables.

You could do a poor's man mysqldbcompare to check that:

mysqldump -d -h server1 -u user1 -ppassword1 pressflow6 &gt; objects1.sql
mysqldump -d -h server2 -u user2 -ppassword2 pressflow6 &gt; objects2.sql
diff objects1.sql objects2.sql