Zoom shortcut stopped working?
 

Hi,

I've been using OmniGraffle all day and for some reason the zoom in and out shortcuts have just stopped working (alt+cmd+(+/-)).

I've no idea if I've pressed something by accident, or what the cause might be but it's driving me mad! Any help would be really appreciated! Sorry I can't be more descriptive of what may have caused the change, I've really no idea.

Matt