How i solved:
- Mount the Flash Player installer .dmg file
- Copy the "Install Adobe Flash Player" file to desktop or any other directory as preferred
- Open terminal and cd to desktop or the other directory
- Run the following command on terminal: sudo ./Install\ Adobe\ Flash\ Player.app/Contents/MacOS/Install\ Adobe\ Flash\ Player
- Insert the password when asked
When I tried the excellent suggested solution, I received the error message:
2013-02-11 16:09:05.968 Adobe Flash Player Install Manager[1169:707] Unable to write data to file '/var/root/Library/Preferences/Macromedia/Flash Player/install_vector.txt'.
Once I had created the missing directory by typing the two commands:
"sudo mkdir /var/root/Library/Preferences/Macromedia" and
"sudo mkdir /var/root/Library/Preferences/Macromedia/Flash Player"
then running the installer from the command line using sudo, as suggested, did work.
Variant that worked for me:
$ cd ~/Downloads/
$ hdiutil mount AdobeFlashPlayerInstaller_11_aih.dmg
$ ls /Volumes/Adobe\ Flash\ Player\ Installer/Install\ Adobe\ Flash\ Player.app/Contents/MacOS/Install\ Adobe\ Flash\ Player
<the above step was to verify the location of the installer, to use in the next step>
$ sudo /Volumes/Adobe\ Flash\ Player\ Installer/Install\ Adobe\ Flash\ Player.app/Contents/MacOS/Install\ Adobe\ Flash\ Player
$ hdiutil unmount /Volumes/Adobe\ Flash\ Player\ Installer/
Thanks all for getting me going in the right direction.
This is what I get. It still won't install.
Last login: Sat Oct 12 11:29:26 on ttys000
Curts-iMac:~ Coz$ cd desktop
Curts-iMac:desktop Coz$ sudo ./Install\ Adobe\ Flash\ Player.app/Contents/MacOS/Install\ Adobe\ Flash\ Player
2013-10-12 11:30:36.957 Adobe Flash Player Install Manager[6300:707] Unexpected umask value for process: 0
2013-10-12 11:30:37.783 Adobe Flash Player Install Manager[6300:707] Install failed with error code: 1.
I get this same error...
Please let me know if you get a answer.
2013-10-15 23:32:33.863 Adobe Flash Player Install Manager[990:707] Unexpected umask value for process: 0
2013-10-15 23:32:34.717 Adobe Flash Player Install Manager[990:707] Install failed with error code: 1.
MacPro 2 x 3 GHz Quad-Core Intel Xeon
2 GB 800 MHz DDR2 FB-DIMM ECC
I did all this (full Flash uninstall, re-install 10.8.5 plus Supplemental, verify hidden mach_kernal at root level, Terminal Reinstall attempt, etc.) with the same result of hanging at 50% on install w/General Install Error.
Then, from a post under General Error Message when Installing Flash Player on Mac:
Having this problem on a fresh install of 10.8.2.
Thanks to @mrdredre, the solution for me was to go to System Preferences, Security & Privacy, General tab, Allow applications downloaded from - make it "Anywhere".
After doing that, I re-ran the installer and it worked just fine.
Crazy that Adobe would release this new installer w/o having it signed so it works without changing this setting.
Switched to Anywhere and everythig installed perfectly.
Afterwards, be sure to switch back to Allow Mac App Store & ID'ed developers.
MBP 2.2GHz i7
OSX 10.8.5 w/supplement
There doesn't appear to be a solution to these particular error messages from Adobe. I have followed the guidance from Adobe.com (uninstalled and re-installed) and then followed the guidance in this forum post and others using the terminal route, all without luck. I have no Flash functionality (other than in Chrome) which is extremely annoying.
My setup is MacBookPro Mavericks 10.9. Firewall is off (temporarily). No virus software. No remnants of Flash as far as I can tell. Logged into a administrator account.
Here's the log for "flash" from console:
Dec 26 12:55:15 XXX kernel: hfs: mounted Adobe Flash Player Installer on device disk2s2
Dec 26 12:55:15 XXX.config mds: (Normal) Volume: volume:XXX ********** Bootstrapped Creating a default store:1 SpotLoc:(null) SpotVerLoc:(null) occlude:0 /Volumes/Adobe Flash Player Installer
Dec 26 12:55:41 XXX.config sudo: admin : TTY=ttys000 ; PWD=/Users/admin/Desktop ; USER=root ; COMMAND=./Install Adobe Flash Player.app/Contents/MacOS/Install Adobe Flash Player –debug
Dec 26 12:56:07 XXX kernel: hfs: could not initialize summary table for Flash Player
Dec 26 12:56:07 XXX kernel: hfs: mounted Flash Player on device disk3s2
Dec 26 12:56:08 XXX.config Adobe Flash Player Install Manager: Unexpected umask value for process: 0
Dec 26 12:56:26 XXX.config Adobe Flash Player Install Manager: Install failed with error code: 11.
Dec 26 12:56:26 XXX kernel: hfs: unmount initiated on Flash Player on device disk3s2
Dec 26 12:56:31 XXX.config sudo: admin : TTY=ttys000 ; PWD=/Users/admin/Desktop ; USER=admin ; COMMAND=/usr/bin/open http://get.adobe.com/flashplayer/completion/aih/?exitcode=11&type=install
Many thanks in advance for your support.