You could try uninstalling kb3081455 and then running windows update and installing it again as you have this error:
Also (after probably) try running dism /online /cleanup-image /restorehealth and then sfc /scannow again.
2015-09-08 22:17:30, Info DPX Extraction of file: update.ses failed because it is not present in the container (\\?\C:\Windows\SoftwareDistribution\Download\75f3af1b940c5b737863e8a342647905\windows10.0-kb3081455-x64-express.cab).
2015-09-08 22:17:30, Info DPX DpxException hr=0x80070002 code=0x020109
2015-09-08 22:17:30, Info CBS Not able to add file to extract: update.ses [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]