Arduino IDE doesn't find header file I'm trying to start with the SainSmart 4x20 serial LCD, and copied the library to the Arduino library:



So LiquidCrystal_I2C.h is included. But when I try to compile an example sketch it says 


  Arduino: 1.7.0 (Windows 7), Board: "Arduino Uno"
  
  HelloWorld_i2c.pde:2:31: fatal error: LiquidCrystal_I2C.h: No such file or directory
  
  compilation terminated.
  
  Error compiling.


Any ideas how to fix this?
I copied the SainSmart library to the IDE's library folder, not noticing that there was already a folder named "LiquidCrystal". Apparently the files added to the existing folder are being ignored.  

Renaming the SainSmart library before adding it solves the problem.