No file and directory found

Projects Programming
1

Arduino: 1.5.7 (Windows 7), Board: "Arduino Uno"

BLA.ino:2:29: fatal error: Adafruit_Sensor.h: No such file or directory
compilation terminated.

This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.

2

Do you install the Adafruit library? From the error I will say that you don't?