The error is due to a missing column, customers_wholesale. This is not part of the Rewards Point plugin. There is a Dual Pricing plugin that uses a similar name, but not that.

Are you using any wholesale plugins?
Look at your cAtch-utS-fLour\orders.php file compared to the 1.5.5 default version. customers_wholesale is not mentioned in the default or this plugins' version of that file.