I had this problem for months it was really pissing me off. But I sorted it.
The problem was corrupted files in pictures, not wmp or the music that I assumed would be the issue.
Cure................ go to pictures and video. I had some files that had no image. These were the corrupted files that were causing the problem. I had 8 photos & 2 videos that I downloaded from my iPhone 5. I Just don't understand how or why it happened. Not a clue.
Even deleting them was hard, as I went to delete them WMP would shutdown.
So I googled and download ' File Assassin' job done all working fine now.
I was cursing Microsoft WMP, but in fact, Apple was the cause of the problem.
Good luck, WMP is so much better than ITunes.
If it works let me know. I Just would like to know if it helps someone.