Retroarch 1.3.4 does not load MESS core (mess2014_libretro.dll)

I’m trying to play some Atari 5200 and Colecovision games. I´ve downloaded MULTI (MESS 2014) library but when I try to load it, does not load and at the bottom of the retroarch window kee saying “1.3.4 - No Core”.

I’ve tried to update everything I could from the “Online Updater” but no luck. It seems v 1.3.4 has some incompatibility with the mess2014 library.

Windows 10 x64 and AMD 7600 here.