FACEBOOK!!! WHY ARE YOU HAVING AN ERROR WHEN I'M ON PC!?!?!

Grrrrrrrrrrrr!!! >:(
FACEBOOK IS HAVING AN ERROR AGAIN!! >< (in my pc)
WHY IS IT WHEN MAH LIL SIST PLAY IT'S NOT HAVING AN ERROR!?!?!??!?
LIFE IS SOOO CRUEL!!!! ToT

SEE!?!?! >~<