I just had this error happen to me, I think for the first time ever. On my C-7, running 2.3.8.134 with all the Z-wave updates installed. I've not changed anything on the hub for weeks; I installed this release as soon as it became available (about 6 days ago).
I've shutdown, unplugged, and restarted and everything is fine again.
This is my "Home" hub, and is enrolled in beta, if you want to pull the logs.
