Which version are you updating from? Also, try exporting the Graphene settings, and then reset it and see if the column mode option works.
Account
Search Forums
Priority Support
This free Support Forum relies on contributions from our support staffs and fellow Graphene themes users. While we endeavour to provide adequate and timely support, due to its voluntary nature responses are not guaranteed and may be delayed.
If you require urgent assistance, you may like to consider our Priority Support option.
Admin 
