Unique visitors not showing when using custom date range

We installed PIWIK for a client to migrate away from OWA. Question they have is when viewing a custom date range, unique visitors are not showing even after adding this to the config.

[General]
enable_processing_unique_visitors_day = 1
enable_processing_unique_visitors_week = 1
enable_processing_unique_visitors_month = 1
enable_processing_unique_visitors_year = 0
enable_processing_unique_visitors_range = 0

Any ideas?

http://www.web-jive.com/uploads/db1181shot.png

you must also set:


enable_processing_unique_visitors_range = 1