Many thanks! I've followed the instructions; here is the cbs.txt file on my DropBox:
https://www.dropbox.com/s/uk9ucs9a7lddtlz/cbs.txt?dl=0
And here is the text of the SFCFix log:
-------------------------------------------
SFCFix version 2.4.5.0 by niemiro.
Start time: 2015-08-15 09:51:09.677
Microsoft Windows 8.1 Update 3 - amd64
Using .zip script file at C:\Users\Tom\Desktop\SFCFix.zip [0]
PowerCopy::
Successfully took permissions for file or folder C:\Windows\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\telemetry.asm-windowsdefault.json
Successfully took permissions for file or folder C:\Windows\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\utc.app.json
Successfully copied file C:\Users\Tom\AppData\Local\niemiro\Archive\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\telemetry.asm-windowsdefault.json to C:\Windows\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\telemetry.asm-windowsdefault.json.
Successfully copied file C:\Users\Tom\AppData\Local\niemiro\Archive\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\utc.app.json to C:\Windows\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\utc.app.json.
Successfully restored ownership for C:\Windows\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\telemetry.asm-windowsdefault.json
Successfully restored permissions on C:\Windows\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\telemetry.asm-windowsdefault.json
Successfully restored ownership for C:\Windows\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\utc.app.json
Successfully restored permissions on C:\Windows\winsxs\amd64_microsoft-windows-u..ed-telemetry-client_31bf3856ad364e35_6.3.9600.17842_none_90da81a4dac50d54\utc.app.json
PowerCopy:: directive completed successfully.
Successfully processed all directives.
SFCFix version 2.4.5.0 by niemiro has completed.
Currently storing 2 datablocks.
Finish time: 2015-08-15 09:51:10.067
Script hash: 5zeE71QxanwyheQYWFfDoaFFqbDWmGU+AU9nkQ8r3lA=
----------------------EOF-----------------------