It would appear from the number of posts and my own experiences that ver 1.1.5 does not work and the problems I have such as hanging when trying to shut the program down and refusing to play mkv files is a problem shared by many and I have found that the only solution is to uninstall ver 1.1.5 and install ver 1.1.4 which seems to work ok for me.
I guess as the software is free we can't moan too much, but it would be nice if it was properly tested before releasing it and I just hope they fix all the problems in ver 1.1.6 or I may have to look for an alternative player, Videolan have not themselves any favours with their latest version of VLC
Steveh24