4 x 4 Keyboard with PCF 8574 problem

Other Hardware LEDs and Multiplexing
1

I am working on interfacing a 4 x 4 keyboard with my Arduino with a PCF 8574 port expander.
I found the following example and library:
https://sites.google.com/site/angelitodeb/Home/i2ckeypad-20090224-3_v0.1.tar.gz?attredirects=0

I installed the library and tried compiling the sketch but get the following error:
(i2ckeypad does not name a type)

I don't know what this means or how to fix it.

Any help would be appreciated.

2

I installed the library

Where?
Did you close all the open IDEs then restart the Arduino IDE pgm again?

3

I installed it in Arduino/Libraries/
Both the .h and the cpp are present.
And yes i closed all IDEs and restarted.

I've also found a post saying this is a buggy library and needs to revised for version 1 and higher.
http://forum.arduino.cc/index.php/topic,102018.0.html

Does anyone know of a current version of this library?