Did you check to see if the pool was down? I doubt it's miner related.
1) Ccminer (djm34) works perfectly to f2pool at the same time and the same rig.
2) Next strange issue. There have been overheated cards near 70C. There were 50-58C degree with ccminer djm34 and 68-71C (!) with T-Rex on the same rig with GTX070.
3) And last, but not a least

. Trouble with my 10 cards rig. Miner didn't start normally yet - "ccminer cooldown exit" and miner restart with the same message after intensity display.
HiveOS (Ubuntu 16.04) with Cuda 9.1. Didn't try Cuda 9.2 yet.