Solved it in my case by adding the my username to the security-tab of the properties of my document-directory (...User\me\documents)

Ah. So: Crap! Got SR1 and the problem still persists.
@Kyhi: Tryed that, gives a security issue, but even this does not solve this problem.

Solved it now by adding the my username to the...

I see no release of SR1 yet.

My installation's current version, which I upgraded to two days ago, is:
"Cumulative Update for Windows 10 for x64-based Systems (KB3081424)"
To see the latest...