I wasn't sure what you needed.
What do you need code? schematic? both more?
if it helps I'm using the library that works from the web4robot website.
the 2nd library that I'm having issues with is the one I obtained when I tried to test MENWIZ menu system.
I didn't modify the the library files and I am starting with the "Hello World" code.
At first I didn't change anything just upload/test garbage on screen.
Then I started changing code so that it looked like the "Hello World" from the Web4Robot one. Still had garbage I tried disconnecting the RX/TX wires that resulted in a blank screen no garbage(atleast it changed)
*Note the Web4Robot code works with these connected or disconnected.
Schematic I followed exactly. I do have a 2nd I2c board but it works perfectly.
if you need more information let me know, and I will try to supply you with information.