I'm using the latest arduino 1.05 for compiling marlin. Actually I believe 1.x+ is required for the latest marlin (feel free to correct me if I'm wrong ;) ).
I don't have the same lcd, but looks like all you need is uncomment this line in Configuration.h:
so it looks like this:
I don't have the same lcd, but looks like all you need is uncomment this line in Configuration.h:
//#define LCD_I2C_PANELOLU2
so it looks like this:
#define LCD_I2C_PANELOLU2