The LCD.C which comes with CCS C Compiler isnt compatible with the LCD of EP4.
With some slight modifications in the timings and the pin layout, the following library is 100% compatible.

Pin Layout is changed to EP4 Board LCD Layout.

D1 -> RW
D2 -> RS
D3 -> EN
D4 -> Data4
D5 -> Data5
D6 -> Data6
D7 -> Data7

Download: CCS C Library for EasyPIC4 LCD
Filesize: 5.90 KB