Hi all,
I have the same problem installing this KB. I have just checked the logs (%WINDIR%\Logs\CBS\CBS.log) and found out that KB2887595 has problems with Hyper-V feature which is installed on my Windows.
I remove that feature (Control Panel > Programs and Features > Turn Windows features on or off, uncheck Hyper-V), then restart.
Then I add that feature again, then restart, again.
Re-install the update, wow, it run smoothly without any problem. Yeah!