ITunes 12.0.1 now just "hangs" and does not complete the sync with my iPhone (iOS 6.1.6).

Question

Hello all,
I've seen similar posts earlier in Apple discussions, but I haven't come across a definitive answer yet…So, let me ask again:
Up until 6-7 hours ago, iTunes 12.0.1 was working perfectly well including syncing with my iPhone (I use an oldie but a goodie and it suits my purposes, iOS 6.1.6, 3GS).  Specifically iTunes now "hangs" and will not complete the syncing process with my iPhone. It get to "2 of 6" in the backing up process, and then the spinning beach ball appears. I keep my iTunes library on a separate external HD (USB).
Even if I only want to launch iTunes 12 to use it (and NOT sync), the application freezes.
In similar posted questions, "Linc Davis" has asked that the user run a diagnostic using the Terminal utility.  I have done this, and I paste the results below.
Any help with this is appreciated!
System Version: OS X 10.8.5 (12F45)
Kernel Version: Darwin 12.5.0
Boot Mode: Normal
Model: MacBookPro6,2
USB
   USB Optical Mouse (KYE Systems Corp.)
System diagnostics
   2014-11-06 iTunes hang
   2014-11-06 iTunes hang
   2014-11-06 iTunes hang
   2014-11-06 iTunes hang
   2014-11-06 iTunes hang
   2014-11-06 iTunes hang
   2014-11-06 iTunes hang
   2014-11-06 iTunes hang
   2014-11-06 iTunes hang
   2014-11-06 iTunes spin
User diagnostics
   2014-10-26 DiskAid crash
   2014-11-03 CalendarAgent crash
Kernel messages
   Nov 4 00:58:33   wl0: Roamed or switched channel, reason #2, bssid 4a:xx:xx:xx:xx:70 (note: I blocked these numbers out)
   Nov 4 09:11:52   SIOCPROTODETACH_IN6: utun0 error=6
   Nov 4 09:26:03   wl0: Roamed or switched channel, reason #8, bssid 4a:xx:xx:xx:xx:70
   --- last message repeated 5 times ---
   Nov 5 00:53:48   IOAudioStream[0xffffff8020a0b200]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,464)->(2,668).
   Nov 5 00:58:25   IOAudioStream[0xffffff8020a0b200]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,444)->(2,644).
   Nov 5 02:48:38   IOAudioStream[0xffffff8020a0b200]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,440)->(2,640).
   Nov 5 02:48:38   wl0: Roamed or switched channel, reason #8, bssid 4a:xx:xx:xx:xx:70
   --- last message repeated 1 time ---
   Nov 5 02:51:16   IOAudioStream[0xffffff8020a0b200]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,420)->(2,620).
   Nov 5 08:10:45   SIOCPROTODETACH_IN6: utun0 error=6
   Nov 5 08:26:07   wl0: Roamed or switched channel, reason #8, bssid 4a:xx:xx:xx:xx:70
   Nov 5 10:09:50   smb_ntstatus_error_to_errno: Couldn't map ntstatus (0xc0020050) to errno returning EIO
   Nov 5 12:43:34   SIOCPROTODETACH_IN6: utun1 error=6
   Nov 5 12:46:11   wl0: Roamed or switched channel, reason #8, bssid 4a:xx:xx:xx:xx:70
   Nov 5 16:55:00   SIOCPROTODETACH_IN6: utun1 error=6
   Nov 5 21:51:41   IOAudioStream[0xffffff8010256400]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,418)->(2,618).
   Nov 5 21:52:04   IOAudioStream[0xffffff8010256400]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,658)->(2,858).
   Nov 5 21:53:44   IOAudioStream[0xffffff801567f000]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,478)->(2,678).
   Nov 5 21:54:28   IOAudioStream[0xffffff801567f000]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,458)->(2,658).
   Nov 5 22:00:05   SIOCPROTODETACH_IN6: utun1 error=6
   Nov 5 22:08:48   IOAudioStream[0xffffff80180a4200]::clipIfNecessary() - Error: attempting to clip to a position more than one buffer ahead of last clip position (1,40c)->(2,60c).
   Nov 5 22:31:57   SIOCPROTODETACH_IN6: utun1 error=6
   Nov 5 23:01:19   wl0: Roamed or switched channel, reason #8, bssid 4a:xx:xx:xx:xx:70
   Nov 6 00:01:42   SIOCPROTODETACH_IN6: utun0 error=6
Loaded extrinsic kernel extensions
   com.freecom.driver.BoulderScsi (1.0.0d1)
Extrinsic daemons
   com.bitdefender.CoreIssues
   com.bitdefender.Daemon
   com.bitdefender.UpdDaemon
   com.wdc.WDSmartWareServer
   com.wdc.WDDMservice
   com.trusteer.rooks.rooksd
   com.sonycorporation.BloggieInstallerAgent
   com.oracle.java.JavaUpdateHelper
   com.microsoft.office.licensing.helper
   com.cisco.anyconnect.vpnagentd
   com.bitdefender.upgrade
   com.bitdefender.AuthHelperTool
   com.adobe.fpsaud
Extrinsic agents
   com.trusteer.rapport.rapportd
   com.sony.BloggieSoftware.AutoRun
   com.cisco.anyconnect.gui
   com.bitdefender.antivirusformac
   com.Livestation
   com.google.keystone.user.agent
   com.divx.agent.postinstall
   com.adobe.ARM.UUID
launchd items
   /Library/LaunchAgents/com.bitdefender.antivirusformac.plist
    (com.bitdefender.antivirusformac)
   /Library/LaunchAgents/com.cisco.anyconnect.gui.plist
    (com.cisco.anyconnect.gui)
   /Library/LaunchAgents/com.sony.BloggieSoftware.AutoRun.plist
    (com.sony.BloggieSoftware.AutoRun)
   /Library/LaunchAgents/com.trusteer.rapport.rapportd.plist
    (com.trusteer.rapport.rapportd)
   /Library/LaunchDaemons/com.adobe.fpsaud.plist
    (com.adobe.fpsaud)
   /Library/LaunchDaemons/com.bitdefender.AuthHelperTool.plist
    (com.bitdefender.AuthHelperTool)
   /Library/LaunchDaemons/com.bitdefender.upgrade.plist
    (com.bitdefender.upgrade)
   /Library/LaunchDaemons/com.cisco.anyconnect.vpnagentd.plist
    (com.cisco.anyconnect.vpnagentd)
   /Library/LaunchDaemons/com.microsoft.office.licensing.helper.plist
    (com.microsoft.office.licensing.helper)
   /Library/LaunchDaemons/com.oracle.java.JavaUpdateHelper.plist
    (com.oracle.java.JavaUpdateHelper)
   /Library/LaunchDaemons/com.sonycorporation.BloggieInstallerAgent.plist
    (com.sonycorporation.BloggieInstallerAgent)
   /Library/LaunchDaemons/com.trusteer.rooks.rooksd.plist
    (com.trusteer.rooks.rooksd)
   /Library/LaunchDaemons/com.wdc.WDDMservice.plist
    (com.wdc.WDDMservice)
   /Library/LaunchDaemons/com.wdc.WDSmartWareServer.plist
    (com.wdc.WDSmartWareServer)
   Library/LaunchAgents/com.adobe.ARM.UUID.plist
    (com.adobe.ARM.UUID)
   Library/LaunchAgents/com.apple.AddressBook.ScheduledSync.PHXCardDAVSource.UUID. plist
    (com.apple.AddressBook.ScheduledSync.PHXCardDAVSource.UUID)
   Library/LaunchAgents/com.apple.AddressBook.ScheduledSync.PHXCardDAVSource.UUID. plist
    (com.apple.AddressBook.ScheduledSync.PHXCardDAVSource.UUID)
   Library/LaunchAgents/com.divx.agent.postinstall.plist
    (com.divx.agent.postinstall)
   Library/LaunchAgents/com.google.keystone.agent.plist
    (com.google.keystone.user.agent)
   Library/LaunchAgents/com.Livestation.plist
    (com.Livestation)
Extrinsic loadable bundles
   /System/Library/Extensions/acsock.kext
    (com.cisco.kext.acsock)
   /System/Library/Extensions/BoulderScsi.kext
    (com.freecom.driver.BoulderScsi)
   /System/Library/Extensions/WD1394HPDriver.kext
    (com.wdc.driver.1394HP)
   /System/Library/Extensions/WDUSBHPDriver.kext
    (com.wdc.driver.USBHP)
   /Library/Audio/Plug-Ins/Components/Flip4Mac WMA Import.component
    (net.telestream.wmv.import)
   /Library/Internet Plug-Ins/AdobePDFViewer.plugin
    (com.adobe.acrobat.pdfviewer)
   /Library/Internet Plug-Ins/AdobePDFViewerNPAPI.plugin
    (com.adobe.acrobat.pdfviewerNPAPI)
   /Library/Internet Plug-Ins/DivXBrowserPlugin.plugin
    (com.divx.DivXBrowserPlugin)
   /Library/Internet Plug-Ins/Flash Player.plugin
    (com.macromedia.Flash Player.plugin)
   /Library/Internet Plug-Ins/Flip4Mac WMV Plugin.plugin
    (net.telestream.wmv.plugin)
   /Library/Internet Plug-Ins/iPhotoPhotocast.plugin
    (com.apple.plugin.iPhotoPhotocast)
   /Library/Internet Plug-Ins/JavaAppletPlugin.plugin
    (com.apple.java.JavaAppletPlugin)
   /Library/Internet Plug-Ins/SharePointBrowserPlugin.plugin
    (com.microsoft.sharepoint.browserplugin)
   /Library/Internet Plug-Ins/SharePointWebKitPlugin.webplugin
    (com.microsoft.sharepoint.webkitplugin)
   /Library/Internet Plug-Ins/Silverlight.plugin
    (com.microsoft.SilverlightPlugin)
   /Library/Internet Plug-Ins/SonyOnlineMediaEngine.bundle
    (com.sony.sonyonlinemediaengine)
   /Library/Internet Plug-Ins/TVUPlugin.webplugin
    (com.tvunetworks.TVUPlugin)
   /Library/PreferencePanes/Flash Player.prefPane
    (com.adobe.flashplayerpreferences)
   /Library/PreferencePanes/Flip4Mac WMV.prefPane
    (net.telestream.wmv.prefpane)
   /Library/PreferencePanes/RapportPreferences.prefPane
    (com.trusteer.RapportPreferences)
   /Library/QuickTime/Flip4Mac WMV Advanced.component
    (net.telestream.wmv.advanced)
   /Library/QuickTime/Flip4Mac WMV Export.component
    (net.telestream.wmv.export)
   /Library/QuickTime/Flip4Mac WMV Import.component
    (net.telestream.wmv.import)
   /Library/Spotlight/GBSpotlightImporter.mdimporter
    (com.apple.garageband.spotlightimporter)
   Library/Address Book Plug-Ins/SkypeABDialer.bundle
    (com.skype.skypeabdialer)
   Library/Address Book Plug-Ins/SkypeABSMS.bundle
    (com.skype.skypeabsms)
Extrinsic shared libraries
   /usr/lib/libgutenprint.2.dylib
   /usr/lib/sqlite/libtclsqlite3.0.dylib
Global login items
   /Library/Application Support/WDSmartWare/WDQuickView.app
User login items
   Dropbox.app
   GREEN BUTTON.app
   SpeechSynthesisServer.app
Safari extensions
   Ghostery
   Facebook Disconnect
   Twitter Disconnect
   DivXHTML5
   TrafficLight
Restricted user files: 21
Font problems: 40
Bad plists
   Library/Preferences/com.apple.iphotomosaic.plist
Desktop file count: 25
Elapsed time (s): 75

Answer 1

Dear Linc,
Thanks, once again, for repeating yourself by sending me the message above (a message you have sent to MANY users with this problem)!
However, you give me this great opportunity to say two things:  1) YAHOO! I fixed the problem, and 2) I want to share how I did so because I hope it helps others.
With the help of reading info at this website http://osxdaily.com/2011/09/22/fix-the-itunes-library-itl-cannot-be-read-version -error-when-downgrading-itunes/, I followed this procedure:
1) I deleted the iTunes 12.0.1 app from my computer
2) In addition, in reading related details at the website above (i.e., by clicking on links on the page AND scrolling to the very bottom to view links to related articles), in my iTunes library folder, I changed MY CURRENT "iTunes Library.itl" to "iTunes Library.old", as the website advises. The current .itl file was the one being used by the iTunes app I had just deleted from my computer.
3) I went to the "Previous iTunes Libraries" folder and dragged a copy of the second-most recent .itl file to my desktop (for me, this file was "iTunes Library 2014-07-23.itl").
4) I re-named it to "iTunes Library.itl"
5) I then dragged a copy of the file in step #4 to my iTunes folder (the folder in which you now also have the "iTunes Library.old" file).
6) I closed all remaining apps on my computer that were opened and I restarted it.
7) Now, you don't have any iTunes app on your computer, so I downloaded a .dmg of iTunes 12.0.1.26 and installed the app (for example, you can download from here: http://www.macupdate.com/app/mac/5661/apple-itunes.
8) Once installed, I opened iTunes and immediately I got the dialogue box, "updating iTunes library" -- THIS TOOK FOREVER AS I HAVE CLOSE TO 1,000 SONGS + OTHER ITEMS IN MY LIBRARY!
9) I patiently waited until the library update completed, but it DID COMPLETE.
10) Viola!  iTunes 12 is not "hanging" (or freezing) any longer.  I can navigate around the application.
CAVEATS:
1) Before I first deleted "the corrupted" iTunes 12, I was able to open the Preferences panel, go to "Devices", and check the box that stops the app from syncing with my iPhone.  This setting seemed to carry over; thus, I have not tried to sync yet…WISH ME LUCK!
2) After going through steps 1-10 above, I didn't immediately have Internet Radio available in the application (i.e., I didn't see it), but it is now showing up and it works!  I just had to wait for a few minutes...
3) I also use iTunes Match, but I haven't turned it on yet in the newly installed app. On the iTunes Match page, it says, "Add this computer" or "No thanks". So, the app is behaving as if I'm just beginning to use iTunes Match for the first time.  Later, I will click on "Add this computer", and I hope it goes smoothly!
4) This isn't a caveat, but I think I should say: my iTunes library is on an external USB HD (I have to say THANK GOD for that). Obviously, this has implications for doing steps 2 to 5 above. The newly installed iTunes 12 app had no trouble in finding where my library is (I had it set up this way back when I was using iTunes 10).
5) One last piece of advice: Make sure that when you plug your iPhone into any other computer only to re-charge but the iTunes app on that computer wants to sync with your phone, you DON'T let it sync.  First, you should go to Preferences in the iTunes app and click on "Devices". Then check the box that says, "Prevent iPods, iPhones,…….from syncing automatically."  After that, you would be able to plug in your iPhone to another computer to re-charge it.
FINALLY:  I THANK EVERYONE WHO WAS WILLING TO SUGGEST SOLUTIONS TO ME REGARDING THIS PROBLEM!  I see that MANY users are having this difficulty, so I thought it would be fair for me to share how I resolved the issue -- my iTunes is running fine now...