Hi. I also have error "unspecified launch failure (719)".
I have never seen that before.
2018.04.22:18:14:02.410: main Eth speed: 192.457 MH/s, shares: 9720/9/1, time: 143:42
2018.04.22:18:14:02.410: main GPUs: 1: 32.082 MH/s (1634) 2: 32.079 MH/s (1632/1) 3: 32.071 MH/s (1621) 4: 32.079 MH/s (1616) 5: 32.079 MH/s (1629) 6: 32.067 MH/s (1597)
2018.04.22:18:14:07.511: main Eth speed: 192.456 MH/s, shares: 9720/9/1, time: 143:42
2018.04.22:18:14:07.511: main GPUs: 1: 32.082 MH/s (1634) 2: 32.080 MH/s (1632/1) 3: 32.071 MH/s (1621) 4: 32.079 MH/s (1616) 5: 32.078 MH/s (1629) 6: 32.067 MH/s (1597)
2018.04.22:18:14:07.714: eths Eth: Send: {"id":5,"jsonrpc":"2.0","method":"eth_getWork","params":[]}
2018.04.22:18:14:07.750: GPU3 CUDA error in CudaProgram.cu:264 : unspecified launch failure (719)
2018.04.22:18:14:07.769: eths Eth: Received: {"jsonrpc":"2.0","id":0,"result":["0xfeea3f97d27b908fa7b3322ae0f78c59b58a2c719acfcfb9a808c481d318a843","0x5683748fa7f53897f1e1a80a8a321d3693761838135be37d1d132c0cd3d7d937","0x000000006df37f675ef6eadf5ab9a2072d44268d97df837e6748956e5c6c2116"]}
2018.04.22:18:14:07.791: GPU1 CUDA error in CudaProgram.cu:264 : unspecified launch failure (719)
2018.04.22:18:14:07.801: GPU3 GPU3 search error: unspecified launch failure
2018.04.22:18:14:07.801: GPU1 GPU1 search error: unspecified launch failure
2018.04.22:18:14:07.807: GPU4 CUDA error in CudaProgram.cu:264 : unspecified launch failure (719)
2018.04.22:18:14:07.807: GPU4 GPU4 search error: unspecified launch failure
2018.04.22:18:14:07.807: GPU5 CUDA error in CudaProgram.cu:264 : unspecified launch failure (719)
2018.04.22:18:14:07.807: GPU5 GPU5 search error: unspecified launch failure
2018.04.22:18:14:07.855: GPU2 CUDA error in CudaProgram.cu:264 : unspecified launch failure (719)
2018.04.22:18:14:07.855: GPU2 GPU2 search error: unspecified launch failure
2018.04.22:18:14:07.855: GPU6 CUDA error in CudaProgram.cu:264 : unspecified launch failure (719)
2018.04.22:18:14:07.856: GPU6 GPU6 search error: unspecified launch failure
2018.04.22:18:14:08.275: wdog Thread(s) not responding. Restarting.
I use PM 2.9e with the following params
set miner_params=-nvidia -cdm 2 -cdmport 3333 -cdmpass 123 -minRigSpeed 188 -rmode 2 -tstop 65 -tstart 40 -logsmaxsize 0
I have done one small change some days ago: changed power limit from 65% to 64%. May be it is a problem.