I had no trouble installing 10.10.1 the update.  The problems I had seen with 
Mavericks (last version) regarding Mail I thought were a thing of the past.

I had deleted all “rules” and rebuilt them one by one, that fixed the random 
behaviour.  I rebuilt all mailboxes. But now?  Blank emails with headers ONLY 
and no content, and that’s random.  

I am thinking Thunderbird.  I have it downloaded and ready to install, but 
thought somebody might have seen the “blank - no content” issue?

Bill

> On 18 Nov 2014, at 10:37, Ronni Brown <ro...@mac.com> wrote:
> 
> Hi Barry,
> 
> Are you sure you have completed installation -  Check 'About This Mac’ - does 
> it show OS X Yosemite Version 10.10.1? 
> Did you do the normal preparation before commencing the Update?
> 
> Here's the step by step way to update:
> 
>  1. Repair Permissions using the Disk Utility on the drive to be updated*
>  2. Backup your current installation using Carbon Copy Cloner, SuperDuper; or 
> Time Machine
>  3. Use the Software Update to download and install 10.10.1 (no Combo until 
> .2 update);
>      Or Download directly from Apple Downloads 
> <http://support.apple.com/kb/DL1779?viewlocale=en_US&locale=en_US> (if you 
> need to install on more than one Mac)
>  4. Re-boot;
>  5. Run Software Update as other software updates for your computer may 
> appear, which you should install. Also some updates must be installed prior 
> to others.
>  6. Repair Permissions 
> 
> If you have TRIM enabled, check to see if it is affected by this update. 
> 
> Note: ”Combo" updates only roll up the dot releases between major updates. So 
> a "Combo" 10.10.2 will appear when 10.10.2 is released, because it "combines" 
> the updates of 10.10.1 and 10.10.2. But nothing before then.
> ==============
> My Installation of OS X Yosemite 10.10.1
> My Installation only took 10mins to install and complete setup, as per below:
> 
> OS X Yosemite 10.10.1 Update Installation:
> 
> The installation process took only 10 mins (commenced install @ 9:48am - 
> completed installation and log-In @ 9:58am)
> 
> 1. 9:48am - Opened OSXUpd10.10.1.dmg - clicked  OSXUpd10.10.1.pkg
> 2. 9:52am - Installer Restarted computer to begin installation
>     Apple Logo with Progress Bar 
>     Then a Blank Grey screen
>     Then a Black Screen
> 3. 9:56am - Login Window appeared - I logged In
>      Diagnostics  & Usage Window appeared - “Send Diagnostics & Usage Data to 
> Apple” (I don’t select)
>      Click ‘Continue’ - Setting up your Mac window appears 
> 4. 9:58am Installation & Setup Complete - (TOTAL time 10 mins)
> 5. I ran Software Update just to check if any further updates had appeared & 
> needed to be installed
> 6. Ran Repair Permissions
> 
> And I was back at work by 10am.
> 
> Cheers,
> Ronni
> 
> 17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt"
> 2.3GHz / 8GB / 750GB @ 7200rpm HD
> 
> OS X Yosemite 10.10.1
> Windows 7 Ultimate (under sufferance)
> 
>> On 18 Nov 2014, at 8:48 am, Barry Sexstone <bjsexst...@netspace.net.au 
>> <mailto:bjsexst...@netspace.net.au>> wrote:
>> 
>> In the absence of other advice I have shut down the Air by powering down, a 
>> procedure I hate to use.   Start up now seems OK.
>> I would still like to know if anyone has suggestions as to how this sort of 
>> problem may be overcome without the drastic step of shutting down by 
>> powering off.
>> 
>> Barry
>> 
>> 
>>> On 18 Nov 2014, at 8:15 am, Barry Sexstone <bjsexst...@netspace.net.au 
>>> <mailto:bjsexst...@netspace.net.au>> wrote:
>>> 
>>> My MacBook air 2012 appears to be hanging after an attempt to up date from 
>>> 10.10 to 10.10.1.   Update was done via app store and all appeared to go 
>>> routinely until the restart.   The machine appeared to shutdown normally 
>>> and the initial restart appeared normal with the advice “restarting” 
>>> appearing on the screen.   The progress bar went all the way to the right 
>>> and then nothing further happened.   The “gear wheel” is still running and 
>>> the “restarting” message is still showing after over an hour.
>>> 
>>> Advice as to my next step?
>>> 
>>> Thanks 
>>> 
>>> Barry
>>> 
>>> 
>>> 
>>> iMac 10,1
>>> Intel Core 2 Duo 3.06 GHz 
>>> 16GB RAM
>>> 1.0 TB HD
>>> OS X 10.10
> 
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Dr Bill Parker
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