Hi there!
I've got problem with error 6002 appearing instantly when I try to use Kinoplex - a popular VOD service in Poland.
Test film - http://kinoplex.gazeta.pl/kinoplex/18,135718,11118887.html
Before moving to new laptop (Win 8.1) I've used Windows7 and it was working perfectly
I've tried:
1) unsetting and setting DRM related option in Silverlight configuration,
2) using MS Fix for corrupted silverlight installation - automatic and manual one
3) clearing browser cache
4) using IE, FF, Chrome,
5) Using their App from Windows Store
6) turning off McAfee
7) some Amazon, Netflix and Comcast KB
No more ideas how to fix this problem, I even don't know how to check what is going on - where to look further :)