Hi and Happy New Year,
the only difference between /etc/init.d/usbarbitrator file with 5.1 and 5.5 is the "GetMaxClients" function,
the error is the same with this file i don't have any 5.5 server who's work fine with usb.
the full error in /var/log/usb.log on 5.5 server:
2014-01-02T09:16:12Z usbarb[2415450]: I120: VTHREAD initialize main thread 2 "usbArb" pid 2415450
2014-01-02T09:16:12Z usbarb[2415450]: I120: PREF Optional preferences file not found at /usr/lib/vmware/config. Using default values.
2014-01-02T09:16:12Z usbarb[2415450]: I120: PREF Optional preferences file not found at //.vmware/config. Using default values.
2014-01-02T09:16:12Z usbarb[2415450]: I120: PREF Disabling user preferences because disableUserPreferences is set.
2014-01-02T09:16:12Z usbarb[2415450]: I120: PREF Failed to load user preferences.
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT --- USER PREFERENCES
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT --- USER DEFAULTS //.vmware/config
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT --- HOST DEFAULTS /etc/vmware/config
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT libdir = /usr/lib/vmware
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT authd.proxy.nfc = vmware-hostd:ha-nfc
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT authd.proxy.nfcssl = vmware-hostd:ha-nfcssl
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT authd.proxy.vpxa-nfcssl = vmware-vpxa:vpxa-nfcssl
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT authd.proxy.vpxa-nfc = vmware-vpxa:vpxa-nfc
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT authd.fullpath = /sbin/authd
2014-01-02T09:16:12Z usbarb[2415450]: I120: DICT --- SITE DEFAULTS /usr/lib/vmware/config
2014-01-02T09:16:12Z usbarb[2415450]: W110: USBArb: Error in rules file at line 1:0, '[' or '{' expected near end of file.
2014-01-02T09:16:12Z usbarb[2415450]: I120: VMware USB Arbitration Service Version 11.1.6
2014-01-02T09:16:12Z usbarb[2415450]: I120: USBArb: Attempting to connect to existing arbitrator on /var/run/vmware/usbarbitrator-socket.
2014-01-02T09:16:12Z usbarb[2415450]: I120: SOCKET creating new socket, connecting to /var/run/vmware/usbarbitrator-socket
2014-01-02T09:16:12Z usbarb[2415450]: W110: SOCKET connect failed, error 2: No such file or directory
2014-01-02T09:16:12Z usbarb[2415450]: I120: USBArb: Failed to connect to the existing arbitrator.
and on 5.1 server who's working good:
2013-11-19T21:25:18Z usbarb[4805]: I120: PREF Optional preferences file not found at /usr/lib/vmware/config. Using default values.
2013-11-19T21:25:18Z usbarb[4805]: I120: PREF Optional preferences file not found at //.vmware/config. Using default values.
2013-11-19T21:25:18Z usbarb[4805]: I120: PREF Disabling user preferences because disableUserPreferences is set.
2013-11-19T21:25:18Z usbarb[4805]: I120: PREF Failed to load user preferences.
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT --- USER PREFERENCES
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT --- USER DEFAULTS //.vmware/config
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT --- HOST DEFAULTS /etc/vmware/config
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT libdir = /usr/lib/vmware
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT authd.proxy.vim = vmware-hostd:hostd-vmdb
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT authd.proxy.nfc = vmware-hostd:ha-nfc
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT authd.proxy.nfcssl = vmware-hostd:ha-nfcssl
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT authd.proxy.vpxa-nfcssl = vmware-vpxa:vpxa-nfcssl
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT authd.proxy.vpxa-nfc = vmware-vpxa:vpxa-nfc
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT authd.fullpath = /sbin/authd
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT authd.soapServer = TRUE
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT vmauthd.server.alwaysProxy = TRUE
2013-11-19T21:25:18Z usbarb[4805]: I120: DICT --- SITE DEFAULTS /usr/lib/vmware/config
2013-11-19T21:25:18Z usbarb[4805]: I120: VMware USB Arbitration Service Version 9.0.75
2013-11-19T21:25:33Z usbarb[4805]: I120: USBArbPipeConnected: Connected to client, socket:11
2013-11-19T21:25:33Z usbarb[4805]: I120: USBArb: Client 4983 connected (version: 5)
thank's.