I believe that fix is in 2.1.0. If you already have ContentBox installed, you can update on the bleeding edge channel. I’m not sure if we have an official download page anywhere for the full version of the bleeding edge, but you can download it directly from our stage integration server:
The fix for this error seems to have been lost in ContentBox 2.1.0 for
Error building: settingService@cb -> CFC coldbox.system.orm.hibernate.WBEventHandler does not implement the interface CFIDE.orm.IEventHandler. The preFlush method is not implemented by the component or it is declared as private. with constructor arguments: {}