Slim browser version not working

Not sure if this is the right subforum, but the slim browser version isn't working for me.
All I get is a black screen. Whenever selecting something from the menu bar, it shows me a dialog, but without content/text.
Windows 10 x64.

http://s8.postimg.org/fbo17lxub/2016..._56_Photos.png

Whenever I select one of the bottom checkboxes, I get an error:
http://s11.postimg.org/gab3q6jtf/201..._15_Photos.png

Looks like we need to run the game as Administrator... Why should a game need Administrator permissions?