I have testet the sgminer on my System whit a  ASUS R9 290X
the miner give my a :
fatal JSON ERROR in configuration file
configuration file can not be used

hmm whats wrong?!?

My config file sgminer.conf:

{
"pools": [
{
"url": "***",
"user": "***",
"pass": "***"
}
],
"algorithm": "Lyra2REv2",
"xintensity" : "32",
"worksize": "32",
"gpu-threads": "8",
"gpu-engine" : "835",
"gpu-memclock" : "1250",
"gpu-powertune" : "-40",
"temp-cutoff": "95",
"temp-overheat": "85",
"temp-target": "65",
"auto-fan" : true,
"gpu-fan" : "0-80",
"api-mcast-port": "4028",
"api-port": "4028",
"expiry": "30",
"failover-only": true,
"failover-switch-delay": "60",
"gpu-dyninterval": "7",
"log": "5",
"no-pool-disable": true,
"queue": "1",
"scan-time": "7",
"tcp-keepalive": "30",
"temp-hysteresis": "3",
"kernel-path" : "/usr/local/bin",
}