I followed the instructions, but the repair tool did not resolve the issue. It left several logs in the following locations:
Do you want to look at any of them?
C:\Windows\windowsupdate.log
C:\Windows\logs\cbs\cbs.log
C:\Users\milbus21\AppData\Local\Temp\FixDotNet.log
C:\Users\milbus21\AppData\Local\Temp\NetFxSetupEvents.txt
C:\Users\milbus21\AppData\Local\Temp\dd_NDP451-KB2858728-x86-x64-AllOS-ENU_decompression_log.txt
C:\Users\milbus21\AppData\Local\Temp\dd_NetFxRepairTool_decompression_log.txt
C:\Users\milbus21\AppData\Local\Temp\dd_SetupUtility.txt
C:\Users\milbus21\AppData\Local\Temp\dd_wcf_CA_smci_20140803_003936_405.txt
C:\Users\milbus21\AppData\Local\Temp\dd_wcf_CA_smci_20140803_003939_805.txt
C:\Users\milbus21\AppData\Local\Temp\Microsoft .NET Framework 4.5.1 Setup_20140802_203732509-MSI_netfx_Full_GDR_x64.msi.txt
C:\Users\milbus21\AppData\Local\Temp\Microsoft .NET Framework 4.5.1 Setup_20140803_102938008-MSI_netfx_Full_GDR_x64.msi.txt
C:\Users\milbus21\AppData\Local\Temp\Microsoft .NET Framework 4.5.1 Setup_20140802_203732509.html
C:\Users\milbus21\AppData\Local\Temp\Microsoft .NET Framework 4.5.1 Setup_20140803_102938008.html
C:\Users\milbus21\AppData\Local\Temp\Microsoft .NET Framework Repair Tool Legacy_20140803_103027492.html
C:\Users\milbus21\AppData\Local\Temp\Microsoft .NET Framework Repair Tool_20140803_102749586.html
C:\Users\milbus21\AppData\Local\Temp\FixDotNet_HKCR_Installer.regdump
C:\Users\milbus21\AppData\Local\Temp\FixDotNet_HKLM_Installer.regdump