Error running Keybase "keybase.updater is not running"

Starting the Keybase UI Client the first time produces the following error:

Log:

Installer: 1.1.40
Privileged Helper: Installed, Bundle Version: 1.0.29, Version: 1.0.29
Updater: Unknown, Install Error: keybase.updater is not running (updater)
Service: Unknown, 
Fuse: Unknown, 
Mount directory: Unknown, 
KBFS: Unknown, 
CLI: Unknown, 

Log:
Version: 1.1.40
Installables: (
    "",
    "",
    "",
    "",
    "",
    "",
    ""
)
Install: Privileged Helper
Connecting to keybase.Helper (privileged=1)
Connected
Helper version: {
    build = 2;
    version = "1.0.29";
}
Helper version: {
    build = 2;
    version = "1.0.29";
}
Install: Updater
Task: /Applications/Keybase.app/Contents/SharedSupport/bin/keybase -d --log-format=file install --format=json --components=updater
Task dispatch completion
Task (out): {
  "componentResults": [
    {
      "name": "updater",
      "status": {
        "code": 1804,
        "name": "ERROR",
        "desc": "keybase.updater is not running",
        "fields": null
      }
    }
  ],
  "status": {
    "code": 1804,
    "name": "ERROR",
    "desc": "keybase.updater is not running (updater)",
    "fields": null
  },
  "fatal": false
}

Task (err): 2016-09-22T21:36:39.869431 ▶ [DEBU keybase globals.go:284] 001 Created LinkCache, max size: 65536, clean dur: 1m0s
2016-09-22T21:36:39.876384 ▶ [DEBU keybase ui.go:557] 002 Can't set GPG_TTY; discover failed
2016-09-22T21:36:39.876543 ▶ [DEBU keybase globals.go:265] 003 Keybase CLI 1.0.17-20160913233827+18b5a25
2016-09-22T21:36:39.876586 ▶ [DEBU keybase globals.go:265] 004 - Built with go1.7
2016-09-22T21:36:39.876599 ▶ [DEBU keybase globals.go:265] 005 - Visit https://keybase.io for more details
2016-09-22T21:36:39.876644 ▶ [DEBU keybase main.go:144] 006 + configureProcesses
2016-09-22T21:36:39.876687 ▶ [DEBU keybase main.go:242] 007 + configureLogging
2016-09-22T21:36:39.876702 ▶ [DEBU keybase main.go:251] 008 Disabling log forwarding
2016-09-22T21:36:39.876713 ▶ [DEBU keybase main.go:244] 009 - configureLogging
2016-09-22T21:36:39.876725 ▶ [DEBU keybase main.go:146] 00a - configureProcesses -> 
2016-09-22T21:36:39.876976 ▶ [DEBU keybase install_osx.go:402] 00b Installing components: [updater]
2016-09-22T21:36:39.877183 ▶ [DEBU keybase install_osx.go:892] 00c Using updater path: /Applications/Keybase.app/Contents/SharedSupport/bin/updater
2016-09-22T21:36:39.883995 ▶ [DEBU keybase install_osx.go:908] 00d No status, needs install
2016-09-22T21:36:39.888163 ▶ [DEBU keybase launchd.go:139] 00e Output (launchctl remove): 
2016-09-22T21:36:39.888282 ▶ [DEBU keybase launchd.go:144] 00f Nothing to stop (keybase.updater)
2016-09-22T21:36:39.888371 ▶ [DEBU keybase install_osx.go:925] 010 Installing updater service
2016-09-22T21:36:39.888539 ▶ [INFO keybase launchd.go:234] 011 Saving /Volumes/Data/Users/philipp/Library/LaunchAgents/keybase.updater.plist
2016-09-22T21:36:39.888613 ▶ [DEBU keybase util.go:173] 012 + Writing to /Volumes/Data/Users/philipp/Library/LaunchAgents/keybase.updater.plist
2016-09-22T21:36:39.889850 ▶ [DEBU keybase util.go:175] 013 | Temporary file generated: /Volumes/Data/Users/philipp/Library/LaunchAgents/keybase.updater.plist.3FZPCT2YKZF2U6VUMQUNMDGP3HV2DUAZ
2016-09-22T21:36:39.890150 ▶ [DEBU keybase util.go:194] 014 - Wrote to /Volumes/Data/Users/philipp/Library/LaunchAgents/keybase.updater.plist -> ok
2016-09-22T21:36:39.890275 ▶ [INFO keybase launchd.go:93] 015 Starting keybase.updater
2016-09-22T21:36:39.894595 ▶ [DEBU keybase launchd.go:96] 016 Output (launchctl load): /Volumes/Data/Users/philipp/Library/LaunchAgents/keybase.updater.plist: Path had bad ownership/permissions
2016-09-22T21:36:41.427476 ▶ [INFO keybase launchd.go:181] 017 Waiting for keybase.updater to be loaded...
2016-09-22T21:36:43.459437 ▶ [INFO keybase launchd.go:181] 018 Waiting for keybase.updater to be loaded...
2016-09-22T21:36:45.490658 ▶ [INFO keybase launchd.go:181] 019 Waiting for keybase.updater to be loaded...
2016-09-22T21:36:47.519747 ▶ [INFO keybase launchd.go:181] 01a Waiting for keybase.updater to be loaded...
2016-09-22T21:36:49.554594 ▶ [INFO keybase launchd.go:181] 01b Waiting for keybase.updater to be loaded...
2016-09-22T21:36:50.054956 ▶ [ERRO keybase standard.go:200] 01c Error installing updater service: keybase.updater is not running
2016-09-22T21:36:50.055777 ▶ [DEBU keybase out_of_date.go:13] 01d + PrintOutOfDateWarnings
2016-09-22T21:36:50.055871 ▶ [DEBU keybase util.go:386] 01e + GetSocket
2016-09-22T21:36:50.055958 ▶ [DEBU keybase util.go:387] 01f - GetSocket -> ok
2016-09-22T21:36:50.056022 ▶ [DEBU keybase socket.go:73] 020 | empty socket wrapper; need a new one
2016-09-22T21:36:50.056109 ▶ [DEBU keybase socket_nix.go:75] 021 Dialing unix:/Volumes/Data/Users/philipp/Library/Group Containers/keybase/Library/Caches/Keybase/keybased.sock
2016-09-22T21:36:50.056557 ▶ [DEBU keybase socket_nix.go:75] 022 Dialing unix:/Volumes/Data/Users/philipp/Library/Caches/Keybase/keybased.sock
2016-09-22T21:36:50.056682 ▶ [DEBU keybase socket.go:88] 023 | DialSocket -> ERROR: There were multiple errors: dial unix /Volumes/Data/Users/philipp/Library/Group Containers/keybase/Library/Caches/Keybase/keybased.sock: connect: no such file or directory; dial unix /Volumes/Data/Users/philipp/Library/Caches/Keybase/keybased.sock: connect: no such file or directory
2016-09-22T21:36:50.056712 ▶ [DEBU keybase out_of_date.go:18] 024 Ignoring error in printOutOfDateWarnings: There were multiple errors: dial unix /Volumes/Data/Users/philipp/Library/Group Containers/keybase/Library/Caches/Keybase/keybased.sock: connect: no such file or directory; dial unix /Volumes/Data/Users/philipp/Library/Caches/Keybase/keybased.sock: connect: no such file or directory
2016-09-22T21:36:50.056753 ▶ [DEBU keybase out_of_date.go:19] 025 - PrintOutOfDateWarnings
2016-09-22T21:36:50.157815 ▶ [DEBU keybase globals.go:312] 026 Calling shutdown first time through
2016-09-22T21:36:50.157988 ▶ [DEBU keybase login_state.go:1015] 027 + Account "LoginState - Shutdown"
2016-09-22T21:36:50.158105 ▶ [DEBU keybase login_state.go:928] 028 - LoginState: Leaving request loop
2016-09-22T21:36:50.158124 ▶ [DEBU keybase login_state.go:1017] 029 - Account "LoginState - Shutdown"
2016-09-22T21:36:50.158168 ▶ [DEBU keybase globals.go:360] 02a exiting shutdown code=0; err=

Install complete
Privileged Helper: Installed, Bundle Version: 1.0.29
Version: 1.0.29
Updater: Install Error: keybase.updater is not running (updater)
Task dispatch completion

Maybe it is a problem that my User Directory is on another Disk?

/Volumes/Data/Users/philipp

instead of

/Users/philipp

Start with install_osx.go and launchd.go, following the updater installation path shown in the log. Reproduce the failure with the home directory mounted at /Volumes/Data/Users/philipp and inspect the reported ownership or permissions error. Done means the updater launches successfully and the initial installation no longer reports that keybase.updater is not running.