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Mac Os X - 10.11.6 won't accept latest security update on Mac Pro early 2008

Hi,

Strange as it might sound, I have got Mac Pro early 2008. It works well though I can't upgrade beyond 10.11.6. Just for now, I have got a routine security update that suckes my old friend. After restoring it from backup i tried it again, now with the combo file: osxupdcombo10.11.6.dmg and that's what i get: " OS X El Capitan Update can't be installed on this disk. This volume does not meet the requirements for this update." The volume was checked and was fine with "disk utility" and so does the backup disk (same notification)


User uploaded file


***

Thank you all,

Arye

<Image Edited by Host to Remove Personal Information>

Mac Pro, macOS Sierra (10.12.5)

Posted on Dec 16, 2017 3:01 PM

Reply
Question marked as Best reply

Posted on Dec 17, 2017 12:35 AM

Your profile says that you ave Sierra version 10.12.5 installed, is that true? You can get Sierra to install if you look hard.

If you are on El Capitan 10.11.6 go to About This Mac click System Report go to Software and click on Installations.

Now click on Install Date twice to see the most recent installs on your mac.

If the mac has installed the latest security update, Security Update 2017-004 OS X v10.11.6 El Capitan then you will no longer be able to install the 10.11.6 Combo update as it has not been updated to include the security update. This may be why you are getting the error message.

7 replies
Question marked as Best reply

Dec 17, 2017 12:35 AM in response to Ya studio

Your profile says that you ave Sierra version 10.12.5 installed, is that true? You can get Sierra to install if you look hard.

If you are on El Capitan 10.11.6 go to About This Mac click System Report go to Software and click on Installations.

Now click on Install Date twice to see the most recent installs on your mac.

If the mac has installed the latest security update, Security Update 2017-004 OS X v10.11.6 El Capitan then you will no longer be able to install the 10.11.6 Combo update as it has not been updated to include the security update. This may be why you are getting the error message.

Dec 17, 2017 12:35 AM in response to Eau Rouge

Hi Rough,

Thank you for your quick reply. Yes you are right, our new Mac Pro runs the Sierra but we are talking about my beloved "vintage". You were very precise with your diagnostic. Does it mean that it will no longer accept Apples security updates? Since it is still asking me to update to 2017-05, what got my computer stuck...User uploaded fileUser uploaded file


A lot of thanks,

Arye

Dec 17, 2017 2:27 AM in response to Ya studio

This is very interesting, my mac pro 2008 running El Capitan 10.11.6 installed the Security Update 2017-004

on the 14/11/2017, it was released on the 31/10/2017, now here comes the interesting part, Security Update 2017-005 was installed on my machine on 10/12/2017, so far a logical sequence of events. However the Security Update 2017-005 does not appear in Apple Support Downloads Latest page along with the other updates that were released on the 6/12/2017, Apple - Support - Downloads Digging a little deeper entering Security Update 2017 into the search field and when the page loads up go to the bottom and click Load More Results and then scroll down you will find Security Update 2017-005, click on it to get the information page and low and behold the post date is stated as 19/7/2017

which is incorrect and this may be the problem. Someone at Apple has perhaps set the wrong criteria in the embedded distribution file and that is why you are getting the refusal.

So for now I am downloading the security update 2017-005 again and see what my mac says when I try to install it, but for now I am puzzled why it has been labelled as 19/7/2017

User uploaded file

Dec 17, 2017 2:26 AM in response to Ya studio

So bang goes that theory, just downloaded the Security Update 2017-005 from here, Download Security Update 2017-005 (El Capitan) which has the wrong date, and it installed quite happily even though I had previously installed it last Sunday. So the problem must lie with you mac so could you post the report generated by running this app, http://etrecheck.com/ the gives snapshot of what is running on your mac and may help with diagnosis, no personal information is included in the report.

Dec 17, 2017 2:50 AM in response to Eau Rouge

WOW..

can this help?

EtreCheck version: 3.4.6 (460)

Report generated 2017-12-17 12:36:58

Download EtreCheck from https://etrecheck.com

Runtime: 4:58

Performance: Good


Click the [Lookup] links for more information from Apple Support Communities.

Click the [Details] links for more information about that line.

Click the [Clean up] link to delete unused files.


Problem: No problem - just checking


Hardware Information:

Mac Pro (Early 2008)

[Technical Specifications] - [User Guide] - [Warranty & Service]

Mac Pro - model: MacPro3,1

2 2.8 GHz Quad-Core Intel Xeon (Xeon(R)) CPU: 8-core

12 GB RAM Upgradeable - [Instructions]

DIMM Riser B/DIMM 1

2 GB DDR2 FB-DIMM 800 MHz ok

DIMM Riser B/DIMM 2

2 GB DDR2 FB-DIMM 800 MHz ok

DIMM Riser A/DIMM 1

2 GB DDR2 FB-DIMM 800 MHz ok

DIMM Riser A/DIMM 2

2 GB DDR2 FB-DIMM 800 MHz ok

DIMM Riser B/DIMM 3

2 GB DDR2 FB-DIMM 800 MHz ok

DIMM Riser B/DIMM 4

2 GB DDR2 FB-DIMM 800 MHz ok

DIMM Riser A/DIMM 3

Empty

DIMM Riser A/DIMM 4

Empty

Handoff/Airdrop2: not supported

Wireless:
en2: 802.11 a/b/g/n


Video Information:

NVIDIA Quadro 4000 - VRAM: 2048 MB

CG2420 1920 x 1200

NVIDIA GeForce 8800 GT - VRAM: 512 MB


Disk Information:

SanDisk SDSSDX480GG25 disk0: (480.1 GB) (Solid State - TRIM: No)

[Show SMART report]

(disk0s1) <not mounted>
[EFI]: 210 MB

Macintosh HD (disk0s2 - Journaled HFS+) /
[Startup]: 361.24 GB (172.95 GB free)

(disk0s3) <not mounted>
[Recovery]: 650 MB

BOOTCAMP (disk0s4 - Tuxera NTFS) <not mounted> : 118.00 GB


TOSHIBA DT01ACA100 disk2: (1 TB) (Rotational)

[Show SMART report]

(disk2s1) <not mounted>
[EFI]: 210 MB

Mac Works (disk2s2 - Journaled HFS+) /Volumes/Mac Works : 420.00 GB (163.24 GB free)

WIN WORKS (disk2s3 - Tuxera NTFS) /Volumes/WIN WORKS : 579.73 GB (193.75 GB free)


WDC WD1003FZEX-00MK2A0 disk3: (1 TB) (Rotational)

[Show SMART report]

(disk3s1) <not mounted>
[EFI]: 210 MB

OS10BU (disk3s2 - Journaled HFS+) /Volumes/OS10BU : 380.00 GB (192.26 GB free)

WINGOHST (disk3s3 - Tuxera NTFS) /Volumes/WINGOHST : 160.00 GB (111.49 GB free)

empty (disk3s4 - Journaled HFS+) /Volumes/empty : 459.59 GB (459.15 GB free)


TOSHIBA DT01ACA100 disk1: (1 TB) (Rotational)

[Show SMART report]

(disk1s1) <not mounted>
[EFI]: 210 MB

MacW-BU (disk1s2 - Journaled HFS+) /Volumes/MacW-BU : 420.00 GB (35.38 GB free)

WinW-BU (disk1s3 - Tuxera NTFS) /Volumes/WinW-BU : 579.73 GB (209.42 GB free)


USB Information:

USBBus

USBBus

USBBus

bluetooth_device

USBBus

USB20Bus

Realtek USB3.0 Hub

Apple, Inc. Keyboard Hub

Apple, Inc Apple Keyboard

hub_device

EIZO EIZO USB HID Monitor


System Software:

OS X El Capitan 10.11.6 (15G17023) - Time since boot: less than an hour


Gatekeeper:

Mac App Store and identified developers


Clean up:

/Library/LaunchAgents/com.logmein.LMILaunchAgentFixer.plist

/Library/Application Support/LogMeIn/bin/LMILaunchAgentFixer.app/Contents/MacOS/LMILaunchAgentFixer fromlaunchagent

Executable not found!

/Library/LaunchAgents/com.nvidia.CUDASoftwareUpdate.plist

/usr/bin/open file:/Library/PreferencePanes/CUDA%20Preferences.prefPane

Executable not found!

/Library/LaunchDaemons/com.logmein.raupdate.plist

/Library/Application Support/LogMeIn/update/raupdate
/s

Executable not found!

~/Library/LaunchAgents/com.apple.CSConfigDotMacCert-[redacted]@me.com-SharedServ ices.Agent.plist

/System/Library/Frameworks/CoreServices.framework/Frameworks/OSServices.framewor k/Versions/A/Support/CSConfigDotMacCert -l ~/Library/Logs/CSConfigDotMacCert.log -u [redacted]@me.com -t SharedServices -s

Executable not found!

~/Library/LaunchAgents/com.jdibackup.ZipCloud.autostart.plist

open /Applications/ZipCloud.app/Contents/Resources/Utility.app -n --args 9 -l

Executable not found!

~/Library/LaunchAgents/com.jdibackup.ZipCloud.notify.plist

open /Applications/ZipCloud.app/Contents/Resources/Utility.app --args 7 1

Executable not found!

6 orphan files found. [Clean up]


Kernel Extensions:

/Library/Application Support/LogMeIn/drivers

[loaded] com.logmein.driver.LogMeInSoundDriver (4.1.5851) [Lookup]


/Library/Application Support/Roxio

[not loaded] com.roxio.TDIXController (2.0) [Lookup]


/Library/Extensions

[not loaded] com.FTDI.driver.D2XXHelper (1.0 - SDK 10.12) [Lookup]

[loaded] com.avira.kext.FileAccessControl (1.2.5 - SDK 10.9) [Lookup]

[loaded] com.logitech.manager.kernel.driver (6.70.1 - SDK 10.11) [Lookup]

[not loaded] com.wacom.kext.wacomtablet (Wacom Tablet 6.3.21-8 - SDK 10.12) [Lookup]


/System/Library/Extensions

[not loaded] com.Leaf.driver.LeafFwXDriverMatcher (1.2.0d1) [Lookup]

[loaded] com.nvidia.CUDA (1.1.0) [Lookup]

[not loaded] com.roxio.BluRaySupport (1.1.6) [Lookup]

[not loaded] com.wacom.kext.pentablet (Pen Tablet 5.3.6-6 - SDK 10.9) [Lookup]

[not loaded] com.wdc.driver.1394HP (1.0.11 - SDK 10.4) [Lookup]

[not loaded] com.wdc.driver.1394_64HP (1.0.1 - SDK 10.6) [Lookup]

[not loaded] com.wdc.driver.USBHP (1.0.11) [Lookup]

[not loaded] com.wdc.driver.USB_64HP (1.0.0 - SDK 10.6) [Lookup]


Startup Items:

TuxeraNTFSUnmountHelper: Path: /Library/StartupItems/TuxeraNTFSUnmountHelper

Startup items no longer function in OS X Yosemite or later


System Launch Agents:

[not loaded] 8 Apple tasks

[loaded] 161 Apple tasks

[running] 71 Apple tasks


System Launch Daemons:

[not loaded] 45 Apple tasks

[loaded] 167 Apple tasks

[running] 80 Apple tasks


Launch Agents:

[not loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2015-09-10) [Lookup]

[running] com.adobe.AdobeCreativeCloud.plist (Adobe Systems, Inc. - installed 2015-09-09) [Lookup]

[loaded] com.adobe.CS4ServiceManager.plist (? 70f708f7 8f8a5aa2 - installed 2012-07-06) [Lookup]

[loaded] com.avira.antivirus.general.agent.plist (? 94ca9a28 3dcf93f8 - installed 2017-12-17) [Lookup]

[loaded] com.avira.antivirus.gjallarhorn.plist (Avira Operations GmbH & Co. KG - installed 2017-12-16) [Lookup]

[loaded] com.avira.antivirus.iris.plist (Avira Operations GmbH & Co. KG - installed 2017-12-16) [Lookup]

[failed] com.avira.antivirus.notifications.agent.plist (? 8b13021d 3dcf93f8 - installed 2017-12-17) [Lookup]

[loaded] com.avira.antivirus.odscan.default.plist (? 72e8466 3dcf93f8 - installed 2017-12-17) [Lookup]

[loaded] com.avira.antivirus.scheduler.agent.plist (? 4b765eec 3dcf93f8 - installed 2017-12-17) [Lookup]

[running] com.avira.antivirus.systray.plist (? 9bf80dc3 face15b8 - installed 2017-12-17) [Lookup]

[loaded] com.avira.antivirus.telemetry.agent.plist (? a4625078 3dcf93f8 - installed 2017-12-17) [Lookup]

[loaded] com.avira.antivirus.update.default.plist (? 7dca32a5 3dcf93f8 - installed 2017-12-17) [Lookup]

[running] com.avira.helper.avstats.plist (? cf66ea88 a28384e2 - installed 2017-12-16) [Lookup]

[loaded] com.avira.servicehub.license.plist (Avira Operations GmbH & Co. KG - installed 2017-12-16) [Lookup]

[loaded] com.avira.servicehub.license.poll.plist (Avira Operations GmbH & Co. KG - installed 2017-12-16) [Lookup]

[running] com.babylon.activation.plist (? dc7cec6a 9b21aa6c - installed 2013-02-09) [Lookup]

[running] com.brother.LOGINserver.plist (? a1772de2 eb1f5433 - installed 2013-11-15) [Lookup]

[loaded] com.divx.dms.agent.plist (? bf9bdaf7 92f0b576 - installed 2017-05-23) [Lookup]

[loaded] com.divx.uninstall.converter.plist (Shell Script 9e90dee7 - installed 2017-04-24)

[loaded] com.divx.uninstall.player.plist (Shell Script 664f994d - installed 2017-04-24)

[loaded] com.divx.uninstall.preferences.plist (Shell Script 1cd1d81c - installed 2017-04-24)

[loaded] com.divx.update.agent.plist (DivX, LLC - installed 2017-05-23) [Lookup]

[running] com.logitech.manager.daemon.plist (Logitech Inc. - installed 2017-11-18) [Lookup]

[failed] com.logmein.LMILaunchAgentFixer.plist (? 2c91a132 0 - installed 2016-02-18) [Lookup] - /Library/Application Support/LogMeIn/bin/LMILaunchAgentFixer.app/Contents/MacOS/LMILaunchAgentFixer: Executable not found!

[running] com.logmein.logmeingui.plist (LogMeIn, Inc. - installed 2016-02-18) [Lookup]

[loaded] com.logmein.logmeinguiagent.plist (LogMeIn, Inc. - installed 2016-02-18) [Lookup]

[not loaded] com.logmein.logmeinguiagentatlogin.plist (LogMeIn, Inc. - installed 2016-02-18) [Lookup]

[loaded] com.nvidia.CUDASoftwareUpdate.plist (? f47cd3dc 0 - installed 2017-12-17) [Lookup] - /Library/PreferencePanes/CUDA%20Preferences.prefPane: Executable not found!

[loaded] com.oracle.java.Java-Updater.plist (? 4e9dae52 72ac4dde - installed 2017-11-13) [Lookup]

[running] com.wacom.pentablet.plist (Wacom Technology Corp. - installed 2016-12-19) [Lookup]

[running] com.wacom.wacomtablet.plist (Wacom Technology Corp. - installed 2017-04-26) [Lookup]


Launch Daemons:

[running] com.adobe.adobeupdatedaemon.plist (Adobe Systems, Inc. - installed 2015-09-09) [Lookup]

[loaded] com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2017-11-28) [Lookup]

[loaded] com.adobe.versioncueCS4.plist (? 511bc467 d45c7f85 - installed 2012-07-06) [Lookup]

[running] com.aladdin.aksusbd.plist (? 882ffbab 25887e50 - installed 2007-11-21) [Lookup]

[failed] com.avira.antivirus.dbcleaner.plist (? 223cb974 24f6020f - installed 2017-12-17) [Lookup]

[running] com.avira.helper.watchdox.plist (? e7e538d1 e163ec4c - installed 2017-12-17) [Lookup]

[running] com.bombich.ccchelper.plist (Bombich Software, Inc. - installed 2017-05-26) [Lookup]

[not loaded] com.logmein.logmeinserver.plist (LogMeIn, Inc. - installed 2016-02-18) [Lookup]

[loaded] com.logmein.raupdate.plist (? 1264939f 0 - installed 2012-07-31) [Lookup] - /Library/Application Support/LogMeIn/update/raupdate: Executable not found!

[loaded] com.nvidia.cuda.launcher.plist (Shell Script 20f73770 - installed 2015-10-10) [Lookup]

[loaded] com.oracle.java.Helper-Tool.plist (Shell Script e3fefdd2 - installed 2017-09-06) [Lookup]

[running] com.wacom.TabletHelper.plist (Wacom Technology Corp. - installed 2017-04-26) [Lookup]

[loaded] com.wacom.displayhelper.plist (Apple, Inc. - installed 2017-10-26)


User Launch Agents:

[not loaded] com.adobe.AAM.Updater-1.0.plist (Adobe Systems, Inc. - installed 2015-09-10) [Lookup]

[failed] com.apple.CSConfigDotMacCert-[redacted]@me.com-SharedServices.Agent.plist (? ? ? - installed 2012-07-05) - /System/Library/Frameworks/CoreServices.framework/Frameworks/OSServices.framewo rk/Versions/A/Support/CSConfigDotMacCert: Executable not found!

[loaded] com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-08-11) [Lookup]

[loaded] com.google.keystone.agent.plist (Google, Inc. - installed 2017-09-28) [Lookup]

[failed] com.jdibackup.ZipCloud.autostart.plist (? 8174745 0 - installed 2016-07-30) [Lookup] - /Applications/ZipCloud.app/Contents/Resources/Utility.app: Executable not found!

[failed] com.jdibackup.ZipCloud.notify.plist (? 887cca1d 0 - installed 2016-07-30) [Lookup] - /Applications/ZipCloud.app/Contents/Resources/Utility.app: Executable not found!

[running] com.vladalexa.MagicPrefs.plist (Vlad Alexa - installed 2017-12-17) [Lookup]


User Login Items:

iTunesHelper Application (Apple, Inc. - installed 2017-12-07)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

WDDriveUtilityHelper Application

(/Applications/WD Drive Utilities.app/Contents/Resources/WDDriveUtilityHelper.app)

Dropbox Application

(/Applications/Dropbox.app)

SilverKeeper Scheduler Application

(/Applications/SilverKeeper.app/Contents/Resources/SilverKeeper Scheduler.app)

ColorNavigator 6 Application

(/Applications/ColorNavigator 6.app)

CCC User Agent Application (Bombich Software, Inc. - installed 2017-05-26)

(/Applications/Carbon Copy Cloner.app/Contents/Library/LoginItems/CCC User Agent.app)

- SMLoginItem - Hidden (Apple, Inc. - installed 2017-04-23)

(/Applications/Compressor.app/Contents/Library/LoginItems/CompressorHelper.app)

Dropbox SDK SMLoginItem - Hidden (Vitaliy Golubenko - installed 2016-12-14)

(/Volumes/Macintosh HD/Applications/SyncMate.app/Contents/Library/LoginItems/SyncMateService.app)

Dropbox SDK SMLoginItem - Hidden (Vitaliy Golubenko - installed 2016-12-14)

(/Applications/SyncMate.app/Contents/Library/LoginItems/SyncMateService.app)

Dropbox SDK SMLoginItem - Hidden (Vitaliy Golubenko - installed 2016-12-14)

(/Volumes/OS10BU/Applications/SyncMate.app/Contents/Library/LoginItems/SyncMateS ervice.app)

TemperatureGaugeHelper SMLoginItem - Hidden (Apple, Inc. - installed 2014-11-16)

(/Applications/Temperature Gauge.app/Contents/Library/LoginItems/TemperatureGaugeHelper.app)

TemperatureGaugeHelper SMLoginItem - Hidden (Apple, Inc. - installed 2014-11-16)

(/Volumes/Macintosh HD/Applications/Temperature Gauge.app/Contents/Library/LoginItems/TemperatureGaugeHelper.app)

TemperatureGaugeHelper SMLoginItem - Hidden (Apple, Inc. - installed 2014-11-16)

(/Volumes/OS10BU/Applications/Temperature Gauge.app/Contents/Library/LoginItems/TemperatureGaugeHelper.app)

- SMLoginItem - Hidden (Apple, Inc. - installed 2017-04-23)

(/Volumes/OS10BU/Applications/Compressor.app/Contents/Library/LoginItems/Compres sorHelper.app)

- SMLoginItem - Hidden (Apple, Inc. - installed 2017-04-23)

(/Volumes/Macintosh HD/Applications/Compressor.app/Contents/Library/LoginItems/CompressorHelper.app )


Internet Plug-ins:

Default Browser: 601 (installed 2016-07-28)

Flip4Mac WMV Plugin: 2.4.4.2 (installed 2012-07-06) [Lookup]

WacomTabletPlugin: WacomTabletPlugin 2.1.0.6 (installed 2017-04-05) [Lookup]

AdobeAAMDetect: 3.0.0.0 (installed 2015-09-09) [Lookup]

FlashPlayer-10.6: 28.0.0.126 (installed 2017-12-16) [Lookup]

DivX Web Player: 3.8.2.404 (installed 2017-04-24) [Lookup]

LogMeIn: 1.0.935 (installed 2013-03-12) [Lookup]

QuickTime Plugin: 7.7.3 (installed 2017-11-09)

Flash Player: 28.0.0.126 (installed 2017-12-16) [Lookup]

LogMeInSafari32: 1.0.935 (installed 2013-03-12) [Lookup]

Silverlight: 5.1.41212.0 (installed 2016-02-25) [Lookup]

iPhotoPhotocast: 7.0 (installed 2012-10-06)

JavaAppletPlugin: Java 8 Update 151 build 12 (installed 2017-11-13) Check version


3rd Party Preference Panes:

Adobe Version Cue CS4 (installed 2012-07-06) [Lookup]

CUDA Preferences (installed 2015-10-10) [Lookup]

Flash Player (installed 2017-11-28) [Lookup]

Flip4Mac WMV (installed 2012-05-16) [Lookup]

Java (installed 2017-11-13) [Lookup]

Logi Options Launcher (installed 2017-11-18) [Lookup]

MagicPrefs (installed 2016-01-20) [Lookup]

Tuxera NTFS (installed 2016-05-17) [Lookup]

PenTablet (installed 2016-12-19) [Lookup]

WacomTablet (installed 2017-04-05) [Lookup]


Time Machine:

Skip System Files: NO

Mobile backups: OFF

Auto backup: NO - Auto backup turned off

Volumes being backed up:

Destinations:

YA1TosX [Local]

Total size: 0 B

Total number of backups: 0

Oldest backup: -

Last backup: -

Size of backup disk: Excellent

Backup size 0 B > (Disk size 0 B X 3)


Top Processes by CPU:

3%
WindowServer

1%
Temperature Gauge

0%
ColorNavigator 6

0%
kernel_task

0%
fontd


Top Processes by Memory:

856 MB kernel_task

349 MB Google Chrome Helper

338 MB Google Chrome Helper

321 MB savapi

281 MB Google Chrome Helper


Top Processes by Energy Use:

5.86 WindowServer

3.16 avguard-ondemand-mgmt

1.12 launchd

0.32 savapi


Virtual Memory Information:

6.39 GB
Available RAM

53 MB Free RAM

5.61 GB
Used RAM

6.34 GB
Cached files

0 B Swap Used


Software installs (last 30 days):

Logitech Options:
(installed 2017-11-18)

Adobe Flash Player:
(installed 2017-12-16)


Install information may not be complete.


Diagnostics Events (last 3 days for minor events):

2017-12-17 11:10:43 Carbon Copy Cloner.app Crash [Open]

Cause: objc_msgSend() selector name: retain



Dec 17, 2017 4:25 AM in response to Ya studio

First off run Etrecheck again and go to the Clean Up section and click on Clean Up at the bottom of the section.

Next up you are running Avira anti-virus, macs do not need anti-virus and can be the cause of many performance woes. So uninstall it fully according to the developers instructions. Also macs do not need any apps that profess to improve performance or clean up your mac, the mac looks after itself. *********

There are an awful lot of Launch Agents and Daemons, do you really need all their associated apps to launch at startup.

You have an awful lot of Login Items, again is it really necessary for you to have all those apps to open when you start your mac. System Preferences> Users & Groups> Login Items, highlight the ones you don't need to start up and click the minus button. I see you have installed Western Digital software for use with your WD drive, macs do not need to have drive manufacturers software installed, so I would uninstall it.

So there is bit of slimming down to be done.

If you do all this then restart your mac, then go to Disk Utility run First Aid, if you have no errors try installing the update and see how you get on.

<Link Edited by Host>

Mac Os X - 10.11.6 won't accept latest security update on Mac Pro early 2008

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