Powerwindows/wipes stopped working in Resolve!

Hi

I think I've pressed a random key that has disabled my powerwindow handles/wipes in Resolve.

If I create a powerwindow, the circles/handles appear, but if I click and drag on them, they don't move.

Similarly if I click on a wipe it won't move either.

I've tried in another user, and it works fine, so I've obviously just knocked something.

Any help wildly appreciated - my grading speed has diminised dramatically as I have to do everything with sliders! And I can't do poly windows!

Otherwise, is there anyway to reset all default settings?

Cheers
Chris