Strangely enough, I upgraded both my RX 570 rigs to the fall creator update, then DDU'd the August blockchain drivers and reinstalled them... and all I'm getting upon restarting Claymore is a whole screenful of these errors (and nothing else). On both rigs. Note that nothing's changed in my settings, clocks or voltages. It should basically just pick up where it left off... but no. -.-
EDIT: A couple of reboots and miner restarts later and everything works fine again. Go figure!