Thanks Husqvarna! Worked on both 450x's.
I have two 450X's running and the same thing happened here about the same time (4:30 EDT). Contacted the dealer who SMS'd the following: 'Something with the system that they're updating I believe. Should fix itself in a day or so. That's how it's worked with several others so far.'
Quite unhandy in monitoring their activity especially when, they are not visible and need hunted down.