click here I'm not sure but I think EC stands for Electronic Classroom, it looks as though you may have somehow altered the programming. Why don't you reinstall it completely. Bear in mind I DO NOT know, it's just a guess.
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This poetic animation about monsters is illustrated in a Van Gogh painterly style
How to get WWDC 2017 tickets
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.