I have 19-2 running on my test rig that is also running plusCPU.
On a clean reboot, plusCPU starts up right away as usual, but as soon as the main GPU miner comes online, something (wdog?) kills plusCPU.
Is the pool address correct ?
No need to add stratum+tcp:// to pool address any more
Looks like the issue is that the port is not being passed to the miner, so it defaults to 80:

And this is what I have in 1bash:
# XMR : if plusCPU is "YES" replace with your XMR info ##
XMR_WORKER=$WORKERNAME
XMR_ADDRESS="crazydane"
XMR_POOL="us-east.cryptonight-hub.miningpoolhub.com"
XMR_PORT="20580"
I fixed it for now by reverting back to:
XMR_POOL="us-east.cryptonight-hub.miningpoolhub.com:20580"
guake -n $HCD -r plusCPU -e "$HCD -a cryptonight -o stratum+tcp://$XMR_POOL:$XMR_PORT -u $XMRADDR -p x -t $threadCOUNT"
else
screen -dmS plusCPU $HCD -a cryptonight -o stratum+tcp://$XMR_POOL:$XMR_PORT -u $XMRADDR -p x -t $threadCOUNT