mac waiting for other installations to complete

My mac osx installer hangs with "mac waiting for other installations to complete" message..

So I googled and found some solutions.

1. reboot max osx (I did not tried) 

2. kill installer process 

I choose second option.

in stackoverflow I read this article http://macintoshhowto.com/osx/how-to-reset-the-osx-installer.html

mook says:

July 23, 2011 at 5:43 am

“sudo killall installd” worked

I tried that. but it doesn't work for me

so, found installer process using ps command and kill them. after than I could Install program that I wanted

naverui-MacBook-Pro-3:~ naver$ sudo ps -ef | grep install

    0  2925     1   0 13 814  ??        28:32.10 /System/Library/PrivateFrameworks/PackageKit.framework/Resources/installd

    0 32714  2925   0 13 914  ??         0:00.03 /usr/bin/perl /tmp/PKInstallSandbox.hNqnUt/Scripts/com.apple.pkg.iTunesXPatch.rfXHks/preinstall /Library/Updates/zzzz031-06976/iTunesXPatch.pkg / / /

    0 32721 32714   0 13 914  ??         0:00.05 /usr/bin/perl /private/tmp/PKInstallSandbox.hNqnUt/Scripts/com.apple.pkg.iTunesXPatch.rfXHks/preinstall_actions/AlertAllStarter /Library/Updates/zzzz031-06976/iTunesXPatch.pkg / / / 0

  501 27603 14738   0 12:24AM ttys000    0:00.00 grep install

naverui-MacBook-Pro-3:~ naver$ sudo kill -i 2925 32713 32714 32721