OK; I’m going to explain what happened. A day before I updated manually to the new WordPress version 4.2.2, but this morning the automatic updates system reinstalled this version again, and BPS ARQ detected this file duplicated and quarantined one of them (I guess the new one). When I restored the file, everything was fine again and fixed. 
- This reply was modified 19 hours, 56 minutes ago by AITpro Admin.
- This reply was modified 19 hours, 55 minutes ago by AITpro Admin.