They were due to join Robb Flynn's outfit on the road including 11 shows in Britain during December. Now they say in a statement: "It is with much regret that we are forced to announce the cancellation of our dates due to business issues far beyond our control. We want to personally extend our apologies to the Machine Head guys and their entire camp, and thank them for offering us such a great opportunity.

"To our fans: the last thing we want to do is let you down, and we are devastated that we can't be part of an amazing tour with one of our favorite bands. We're ready to get on stage - but the cancellation is completely unavoidable, despite every attempt by us to make it happen."