Hi there
I did as suggested below and ran the pre-scan again. It comes up with one possibly corrupt result, see below. I am not sure if this is the file you gave meand whether it is there because I installed it incorrectly? Reparse points and environmental variables are ok. I am aware that the tool says I can continue with scans anyway but I am trying to do each stage as suggested. Last time I went ahead and tried the repairs section but it couldn't complete so I'm wanting to try again if I do it step by step. I am not a tech so need this in layman's terms.
Cheers
Matthew
Scanning Windows Packages Files.
│ Started at (19/11/2015 22:25:26)
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│ These Files Are Possibly Corrupt (Bad Digital Signature): (Total: 1)
C:\Windows\servicing\Packages\Package_6_for_KB2585542~31bf3856ad364e35~amd64~~6.1.1.3.mum
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1 Combined Problems were found with the packages files, these files need to be replaced (These mainly only effect installing Windows Updates.)
│ The SFC (System File Checker) doesn't scan and replace some of these files, so you may need to replace them manually.
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│ THESE FILES DO NOT KEEP THE REPAIRS FROM WORKING; YOU MAY STILL RUN THE REPAIRS IN THE PROGRAM.
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│ If you need help in replacing these files, post on the Forums at Tweaking.com for help.
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│ Files Checked & Verified: 3,875
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│ Done Scanning Windows Packages Files.(19/11/2015 22:30:07)