I am running 12.04 LTS fully updated. Added new HDD and partitioned it ready for 14.04. Went to software centre and started downloaing phase of install of the signed kernel 14.04 I found there. Then cancelled it when I found I could upgrade from the 'syatem up to date' link on the system pulldown at top-right of screen. Then got thie failed to install error.
ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: fglrx-updates 2:13.125-0ubuntu0.0.1
ProcVersionSignature: Ubuntu 3.11.0-26.45~precise1-generic 3.11.10.12
Uname: Linux 3.11.0-26-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
DKMSKernelVersion: 3.13.0-34-generic
Date: Sun Aug 17 20:56:34 2014
InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release amd64 (20140204)
MarkForUpload: True
PackageVersion: 2:13.125-0ubuntu0.0.1
SourcePackage: fglrx-installer-updates
Title: fglrx-updates 2:13.125-0ubuntu0.0.1: fglrx-updates kernel module failed to build
UpgradeStatus: Upgraded to precise on 2014-08-17 (0 days ago)
Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1254424, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.