Groove Agent ONE problem - parameters not working suddenly.

Howdy

OK so this never happened before. I’m in a project in Cubase 6, which has an Instrument track using Groove Agent ONE.

All of a sudden none of the parameter rotaries in Groove agent are working in ‘Play’, ‘Voice’, ‘Filter’ etc. That was all working fine in this project up to this.

When I set up a new track in the project to check if it would work - same thing.

I’ve loaded other projects and I’m getting the same thing - moving the rotaries has no effect. I can’t adjust Groove Agent parameters.

any help greatly appreciated. Probably something simples as always…

Using Windows 7 and Motu Audio Express interface.

thanks