It looks like you have a character LCD hooked up ..
i think that the lcd is not compatible with the library as :-
library supports only " The LiquidCrystal
library works with all LCD displays that are compatible with the
Hitachi HD44780 driver. There are many of them out there, and you
can usually tell them by the 16-pin interface." double check that the LCD is using the same driver that the library supports .....