Strange one this folks. CSC cache has been reset accordingly, profile re-created etc.
I've enabled Offline Files and everything looking good, in other words I have the option available to me on the drop down to make a file or folder available offline. When I select the option though it appears as though the instruction has been processed but if I immediately right click on the file in question the option is still 'un-ticked'.
As you can see tried the usual stuff after the initial CSC became corrupt.
Your assistance is appreciated,