This is the log from my latest attempt to install one of the software updates, Java for Mac OS X 10.6 Update 15.
May 28 20:00:04 Kris-Gondo Installer[1341]: @(#)PROGRAM:Install PROJECT:Install-596.1
May 28 20:00:04 Kris-Gondo Installer[1341]: @(#)PROGRAM:Installer PROJECT:Installer-430.1
May 28 20:00:04 Kris-Gondo Installer[1341]: Hardware: MacBookPro7,1 @ 2.66 GHz (x 2), 4096 MB RAM
May 28 20:00:04 Kris-Gondo Installer[1341]: Running OS Build: Mac OS X 10.6.8 (10K549)
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: PATH=/usr/bin:/bin:/usr/sbin:/sbin
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: TMPDIR=/var/folders/AC/ACJMioxLF3uUftumWunB4k+++TM/-Tmp-/
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: SHELL=/bin/bash
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: HOME=/Users/krisgondo
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: USER=krisgondo
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: LOGNAME=krisgondo
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: DISPLAY=/tmp/launch-dhSnu4/org.x:0
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: SSH_AUTH_SOCK=/tmp/launch-IslkYL/Listeners
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: Apple_PubSub_Socket_Render=/tmp/launch-lWUaBX/Render
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: COMMAND_MODE=unix2003
May 28 20:00:04 Kris-Gondo Installer[1341]: Env: __CF_USER_TEXT_ENCODING=0x1F6:0:0
May 28 20:00:04 Kris-Gondo Installer[1341]: Java for Mac OS X 10.6 Update 15 Installation Log
May 28 20:00:04 Kris-Gondo Installer[1341]: Opened from: /Volumes/Java For Mac OS X 10.6 Update 15/JavaForMacOSX10.6.pkg
May 28 20:00:32 Kris-Gondo runner[1350]: Administrator authorization granted.
May 28 20:00:32 Kris-Gondo Installer[1341]: =============================================================================== =
May 28 20:00:32 Kris-Gondo Installer[1341]: User picked Standard Install
May 28 20:00:32 Kris-Gondo Installer[1341]: Choices selected for installation:
May 28 20:00:32 Kris-Gondo Installer[1341]: Upgrade: "Java for Mac OS X 10.6 Update 15"
May 28 20:00:32: --- last message repeated 1 time ---
May 28 20:00:32 Kris-Gondo Installer[1341]: JavaForMacOSX10.6.pkg#JavaForMacOSX10.6.pkg : JavaForMacOSX10.6 : 10.6.0.15.1.1247562015
May 28 20:00:32 Kris-Gondo Installer[1341]: JavaForMacOSX10.6.pkg#JavaSecurity.pkg : JavaSecurity : 1.0.0.0.1.1247562015
May 28 20:00:32 Kris-Gondo Installer[1341]: =============================================================================== =
May 28 20:00:32 Kris-Gondo Installer[1341]: It took 0.00 seconds to summarize the package selections.
May 28 20:00:32 Kris-Gondo Installer[1341]: -[IFDInstallController(Private) _buildInstallPlan]: location = file://localhost
May 28 20:00:32 Kris-Gondo Installer[1341]: -[IFDInstallController(Private) _buildInstallPlan]: file://localhost/Volumes/Java%20For%20Mac%20OS%20X%2010.6%20Update%2015/JavaFor MacOSX10.6.pkg#JavaForMacOSX10.6.pkg
May 28 20:00:32 Kris-Gondo Installer[1341]: -[IFDInstallController(Private) _buildInstallPlan]: file://localhost/Volumes/Java%20For%20Mac%20OS%20X%2010.6%20Update%2015/JavaFor MacOSX10.6.pkg#JavaSecurity.pkg
May 28 20:00:32 Kris-Gondo Installer[1341]: Will use PK session
May 28 20:00:32 Kris-Gondo Installer[1341]: Starting installation:
May 28 20:00:32 Kris-Gondo Installer[1341]: Configuring volume "Macintosh HD"
May 28 20:00:32 Kris-Gondo Installer[1341]: Preparing disk for local booted install.
May 28 20:00:32 Kris-Gondo Installer[1341]: Free space on "Macintosh HD": 41.87 GB (41869430784 bytes).
May 28 20:00:32 Kris-Gondo Installer[1341]: Create temporary directory "/var/folders/AC/ACJMioxLF3uUftumWunB4k+++TM/-Tmp-//Install.1341pDeU2J"
May 28 20:00:32 Kris-Gondo Installer[1341]: IFPKInstallElement (2 packages)
May 28 20:00:32 Kris-Gondo installd[1354]: PackageKit: ----- Begin install -----
May 28 20:00:32 Kris-Gondo installd[1354]: PackageKit: request=PKInstallRequest <2 packages, destination=/>
May 28 20:00:32 Kris-Gondo installd[1354]: PackageKit: packages=(\n "PKLeopardPackage <file://localhost/Volumes/Java%20For%20Mac%20OS%20X%2010.6%20Update%2015/JavaFo rMacOSX10.6.pkg#JavaForMacOSX10.6.pkg>",\n "PKLeopardPackage <file://localhost/Volumes/Java%20For%20Mac%20OS%20X%2010.6%20Update%2015/JavaFo rMacOSX10.6.pkg#JavaSecurity.pkg>"\n)
May 28 20:00:33 Kris-Gondo installd[1354]: PackageKit: Install Failed: PKG: extracting "com.apple.pkg.JavaForMacOSX10.6"\nError Domain=PKInstallErrorDomain Code=110 UserInfo=0x10202b620 "An error occurred while extracting files from the package “JavaForMacOSX10.6.pkg”." Underlying Error=(Error Domain=NSCocoaErrorDomain Code=259 "The file couldn’t be opened because it isn’t in the correct format.") {\n NSFilePath = "/var/folders/zz/zzzivhrRnAmviuee+++++++++++/Cleanup At Startup/PKInstallSandbox-tmp/Root";\n NSLocalizedDescription = "An error occurred while extracting files from the package \U201cJavaForMacOSX10.6.pkg\U201d.";\n NSURL = "#JavaForMacOSX10.6.pkg -- file://localhost/Volumes/Java%20For%20Mac%20OS%20X%2010.6%20Update%2015/JavaFor MacOSX10.6.pkg";\n NSUnderlyingError = "Error Domain=NSCocoaErrorDomain Code=259 \"The file couldn\U2019t be opened because it isn\U2019t in the correct format.\"";\n PKInstallPackageIdentifier = "com.apple.pkg.JavaForMacOSX10.6";\n}
May 28 20:00:33 Kris-Gondo Installer[1341]: install:didFailWithError:Error Domain=PKInstallErrorDomain Code=110 UserInfo=0x122664c60 "An error occurred while extracting files from the package “JavaForMacOSX10.6.pkg”." Underlying Error=(Error Domain=NSCocoaErrorDomain Code=259 "The file couldn’t be opened because it isn’t in the correct format.")
May 28 20:00:34 Kris-Gondo Installer[1341]: Install failed: The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.
May 28 20:00:34 Kris-Gondo Installer[1341]: IFDInstallController 70EC9E0 state = 7
May 28 20:00:34 Kris-Gondo Installer[1341]: Displaying 'Install Failed' UI.
May 28 20:00:34 Kris-Gondo Installer[1341]: 'Install Failed' UI displayed message:'The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance.'.