MPC-HC STOPPED WORKING

I have install the K-Lite Codec Pack : Version 13.5.5 Mega and then the last update version 13.5.9 ~ 19.4 MB ~ October 5th 2017.

I always use it for years and I have no problems. I always use MPC-HC to watch videos and movies and it was working fine yesterday. Today I try to open a video (movie mp4) and it open but dont play it. The stop button is pushed and i cant uncheck it. I tried diferent files and diferents video formats and it is the same problem with all. I tried to open the same videos and movies with VLC media player and all videos open and it work fine. So the problem is with MPC-HC. Something is making that the stop button is cheked and i cant uncheck it. pls need help with this.

Did you also recently update your graphics driver? It can be caused by that. Try disabling hardware acceleration in LAV Video decoder settings.