@mikmatcr If this only ever happens on multicast deploys we should start looking at those logs I reckon. Please upload all the log files you find in /var/log/fog/ that have multicast in their filename.
Though I am not much optimistic we’ll find the issue in multicasting. I say this because in the pictures we see errors at various points in the deployment process. That points to hardware issues on those machines I would guess. Maybe dying hard drives or memory or whatever.