Ok, i've wanted to give it a try to 5.1 one more time, yes it mines, but has a problem, at least with my old gpu's. HD5xxx
I have:
HD5800
HD5870
HD5970

Mining is ok, but seems that miner does not control FANS at all, my gpu's temp went in a minute to 90 degrees.
Old miner version 4 controls fans just fine.

here is screenshot:



And this is config:

-------------------------------------

{
    "pools": [

        {
            "name": "x11",
            "url": "http://localhost:11111",
            "user": "user",
            "pass": "pass",
            "profile": "x11",
            "algorithm": "x11mod"
        }
    ],
    "profiles": [

        {
"name": "x11",
"algorithm": "x11mod",
"device": "0,1,2,3",
"intensity" : "20,19,18,18",
"worksize": "128,128,128,128",
"gpu-engine" : "890,920,815,815",
"gpu-memclock": "0-350,0-350,0-350,0-350",
"gpu-threads": "1",
"gpu-fan": "0-100,0-100,0-100,0-100",
"auto-fan" : true,
"temp-cutoff" : "95,95,95,95",
"temp-overheat" : "85,85,85,85",
"temp-target" : "80,80,80,80"
           
        }
    ],
    "show-coindiff": true,
    "api-listen": true,
    "api-allow": "W:127.0.0.1",
    "api-port": "4028",
    "api-mcast-port": "4028",
    "expiry": "1",
    "queue": "2",
    "scan-time": "3",
    "hamsi-expand-big": "1",
    "hamsi-short": true,
    "no-pool-disable": true,
    "no-client-reconnect": true,
    "no-submit-stale": true,
    "no-restart": true,
    "failover-switch-delay": "10"
}


-------------------------------
seems that these commands does not work in 5.1

"gpu-fan": "0-100,0-100,0-100,0-100",
"auto-fan" : true,
"temp-cutoff" : "95,95,95,95",
"temp-overheat" : "85,85,85,85",
"temp-target" : "80,80,80,80"