App Store updates broken

Question

I cannot update certain software. Safari 8.0.4 is an example. The progress bar flashes quickly then nothing else happens. The update never goes though. In the past when this has happened I have downloaded a stand alone installer. Safari 8.0.4 is unavailable.
I've tried removing caches and temp files associated with the store to no avail.
any ideas?
ps iPhoto update worked fine

Answer 1

Thanks!
this dump is the result of pushing the update button.  there was a huge dump after moving to the updates section from the featured section in App Store.
by the way...repairing permissions has never helped this problem either.
Marker - Mar 21, 2015, 10:14:05 AM
Mar 21 10:14:08 macminilocal.local softwareupdated[180]: Could not create parent path for partial download: file:///var/folders/zz/zyxvpxvq6csfxvn_n00000s0000068/C/com.apple.SoftwareUpdat e/swcdn.apple.com/content/downloads/53/38/031-17831/xm6yjkk13e2axuwutxeq0zsn2s2p pt34d8/Safari8.0.4Yosemite.pkg (Error Domain=NSCocoaErrorDomain Code=513 "You don’t have permission to save the file “xm6yjkk13e2axuwutxeq0zsn2s2ppt34d8” in the folder “031-17831”." UserInfo=0x7f95e599a0b0 {NSFilePath=/var/folders/zz/zyxvpxvq6csfxvn_n00000s0000068/C/com.apple.Software Update/swcdn.apple.com/content/downloads/53/38/031-17831/xm6yjkk13e2axuwutxeq0zs n2s2ppt34d8, NSUnderlyingError=0x7f95f4eb7000 "The operation couldn’t be completed. Permission denied"})
Mar 21 10:14:08 macminilocal.local installd[487]: PackageKit: Adding client PKInstallDaemonClient pid=180, uid=200 (/System/Library/CoreServices/Software Update.app/Contents/Resources/softwareupdated)
Mar 21 10:14:08 macminilocal.local storeassetd[311]: SUAppStoreUpdateController: disk space required for updates is: 1556850899
Mar 21 10:14:08 macminilocal.local installd[487]: PackageKit: Removing client PKInstallDaemonClient pid=180, uid=200 (/System/Library/CoreServices/Software Update.app/Contents/Resources/softwareupdated)
Mar 21 10:14:15 macminilocal.local storeassetd[311]: SUAppStoreUpdateController: start install session with 031-17831
Mar 21 10:14:15 macminilocal.local softwareupdated[180]: SoftwareUpdate: Added foreground transaction [0x4] for Safari8.0.4Yosemite-8.0.4
Mar 21 10:14:15 macminilocal.local softwareupdated[180]: SoftwareUpdate: starting download of 031-17831 (Safari8.0.4Yosemite-8.0.4)
Mar 21 10:14:15 macminilocal.local softwareupdated[180]: Could not create parent path for partial download: file:///var/folders/zz/zyxvpxvq6csfxvn_n00000s0000068/C/com.apple.SoftwareUpdat e/swcdn.apple.com/content/downloads/53/38/031-17831/xm6yjkk13e2axuwutxeq0zsn2s2p pt34d8/Safari8.0.4Yosemite.pkg (Error Domain=NSCocoaErrorDomain Code=513 "You don’t have permission to save the file “xm6yjkk13e2axuwutxeq0zsn2s2ppt34d8” in the folder “031-17831”." UserInfo=0x7f95f0d4d050 {NSFilePath=/var/folders/zz/zyxvpxvq6csfxvn_n00000s0000068/C/com.apple.Software Update/swcdn.apple.com/content/downloads/53/38/031-17831/xm6yjkk13e2axuwutxeq0zs n2s2ppt34d8, NSUnderlyingError=0x7f95f21b5500 "The operation couldn’t be completed. Permission denied"})
Mar 21 10:14:15 macminilocal.local softwareupdated[180]: Cannot write distribution for 031-17831
Mar 21 10:14:15 macminilocal.local softwareupdated[180]: Could not create parent path for partial download: file:///var/folders/zz/zyxvpxvq6csfxvn_n00000s0000068/C/com.apple.SoftwareUpdat e/swcdn.apple.com/content/downloads/53/38/031-17831/xm6yjkk13e2axuwutxeq0zsn2s2p pt34d8/Safari8.0.4Yosemite.pkg (Error Domain=NSCocoaErrorDomain Code=513 "You don’t have permission to save the file “xm6yjkk13e2axuwutxeq0zsn2s2ppt34d8” in the folder “031-17831”." UserInfo=0x7f95e5958b70 {NSFilePath=/var/folders/zz/zyxvpxvq6csfxvn_n00000s0000068/C/com.apple.Software Update/swcdn.apple.com/content/downloads/53/38/031-17831/xm6yjkk13e2axuwutxeq0zs n2s2ppt34d8, NSUnderlyingError=0x7f95e6f93040 "The operation couldn’t be completed. Permission denied"})
Mar 21 10:14:15 macminilocal.local softwareupdated[180]: SoftwareUpdate: error download of 031-17831: Error Domain=NSCocoaErrorDomain Code=513 "The file couldn’t be saved because you don’t have permission."
Mar 21 10:14:15 macminilocal.local softwareupdated[180]: SoftwareUpdate: Removed foreground transaction [0x4]
Mar 21 10:14:15 macminilocal.local storeassetd[311]: SUAppStoreUpdateController: did not start session for 031-17831 (previously installed?)
Mar 21 10:14:15 macminilocal.local softwareupdated[180]: Failed to write state: Error Domain=NSCocoaErrorDomain Code=513 "You don’t have permission to save the file “com.apple.SoftwareUpdate.SUUpdateServiceDaemon.state”." UserInfo=0x7f95f5426a00 {NSURL=file:///var/folders/zz/zyxvpxvq6csfxvn_n00000s0000068/C/com.apple.Softwa reUpdate.SUUpdateServiceDaemon.state, NSUserStringVariant=Folder, NSUnderlyingError=0x7f95f2062d70 "The operation couldn’t be completed. Permission denied"}