uLCD 32-PT Problems + Arduino UNO + Arduino Mega 2560

I Bought this screen (http://www.4dsystems.com.au/prod.php?id=114) several months ago, I found this tutorial (http://www.mauroalfieri.it/informatica/tutorial-ulcd-32pt- e-arduino-come-programmatore-seriale.html) to use it, I tested this in Arduino UNO like the tutorial explains. Everything worked fine but when I tested with Arduino Mega 2560 use pins 2 - 3 - 4 because I had not read that to apply the library I found (https://github.com/rei-vilo/Serial_LCD) in the tutorial should use pins 10 11 12 13 50 51 52 53 for Arduino Mega.

Now when I load the sample program I had used before and worked in the Arduino UNO does not work on the screen but I told myself that the platform is loaded. Not happening, could it be that the screen is damaged? (Something weird because I can still change the mode (SGC | GXF) with PMMC loader) or Could it be because I’m using version 1.5.2-arduino? but because it worked before, so I guess that does not matter because the libraries are compatible with arduino 1.0 and 1.5.2 or no?

How to know that my screen is broken??? :~

I need help because I’ve tried everything … : '(

It sounds like the sound second sketch changed the baud rate from the default 9600 to something else and for some reason 57600 seems to be very 'persistant' in my memory (it has been several month's since i used ReVilo's great library) but that pops to mind, strongly. Many if not most sketches expect the comm to default to the default... baud rate HTH.