INSTALLATION ERROR FOR WINDOWS 7

Mar 22 at 12:59 PM
Component Microsoft .NET Framework 4.5 (x86 and x64) has failed to install with the following error message:
"A failure occurred attempting to install the Microsoft .NET Framework 4.5."

The following components were not installed:
  • Microsoft .NET Framework 4 (x86 and x64)
The following components failed to install:
  • Microsoft .NET Framework 4.5 (x86 and x64)
See the setup log file located at 'C:\Users\user\AppData\Local\Temp\VSDAAB3.tmp\install.log' for more information.
Mar 22 at 1:08 PM
I installed Nodexl from cnet and the download was successful. But i couldnt register my twitter account from the Nodexl to enable it access my contacts, so i uninstalled it and downloaded straight from here. The download was going quite well,till the 2nd installation phase where it showed what i posted above.
So what do i need to do to get it working?