I have now made Step 1 and Step 2, Step 3 as requested in #6
And still get this in /var/log/sw-cp-server/error_log (masked my ip's)
2015/04/02 04:14:28 [error] 7882#0: *26 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: , request: "POST /server/key_upload.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxx.xxx.xxx.xxx:8443", referrer: "
https://xxx.xxx.xxx.xxx:8443/server/key_upload.php"
2015/04/02 04:16:41 [error] 7882#0: *83 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: , request: "POST /server/key_upload.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxx.xxx.xxx.xxx:8443", referrer: "
https://xxx.xxx.xxx.xxx:8443/server/key_upload.php"
2015/04/02 04:31:38 [error] 7882#0: *120 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: , request: "POST /server/key_upload.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxx.xxx.xxx.xxx:8443", referrer: "
https://xxx.xxx.xxx.xxx:8443/server/key_upload.php"
2015/04/02 04:33:56 [error] 7882#0: *138 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: , request: "GET /modules/configurations-troubleshooter/index.php/index/list HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxx.xxx.xxx.xxx:8443", referrer: "
https://xxx.xxx.xxx.xxx:8443/admin/module/list?context=modules"
2015/04/02 04:45:02 [error] 16002#0: *2 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: , request: "POST /server/key_upload.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxx.xxx.xxx.xxx:8443", referrer: "
https://xxx.xxx.xxx.xxx:8443/server/key_upload.php"
2015/04/02 04:46:24 [error] 16002#0: *25 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: , request: "POST /server/key_upload.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxx.xxx.xxx.xxx:8443", referrer: "
https://xxx.xxx.xxx.xxx:8443/server/key_upload.php"
2015/04/02 04:51:33 [error] 16002#0: *38 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: xxx.xxx.xxx.xxx, server: , request: "POST /server/key_upload.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxx.xxx.xxx.xxx:8443", referrer: "
https://xxx.xxx.xxx.xxx:8443/server/key_upload.php"