Subtitles Naming Problem
 

Hey there,
I've recently updated to Windows 8.1 from Windows 7. I used to download subtitles from bs player, so I've installed it again. I've used the same settings as before, but now when a subtitle is downloaded, it is named differently from the original file. for example: a movie named "22.Jump.Street.2014.1080p.WEB-DL.AAC2.0.H264-RARBG" will have a subtitle named: "22JUMP~1(1)".
What is wrong, and how to fix it?