MENWIZ: yet another character lcd menu wizard library

Okay Brunalti,
I tested the new functionalities and here is my review:
GOOD THING:
1- Menu index (MW_MENU_INDEX) appears on the LCD screen and looks good
2- The new library function good when serial.println function is not in use in the USER DISPLAY SCREEN.
BAD THING:
1- The new library is unstable, if the serial monitor is ON and Serial.Println function working in the USER DISPLAY SCREEN:

a)I have 04 nodes in the MAIN MENU, If the Serial.Println(); i.e. serial communication is on then when i reach to 4/4, the arduino reset itself and shows weired characters on LCD. It always reset..

Just see the MenuStructure:
MAIN MENU
Basic Parameters
Move East
Save
Load

Basic Parameters have terminal nodes like following
Basic Parameters
Manual (This is List of 5)
Motor PWM
Sensitivity
NightRetHr
RTimeSec
LightPoint
SampleTimein

b) if the serial communication is on, When i go to Node 3 of the Menu (Save), and press the confirm button, the next screen appears but all things are mixed up and nothing happen.
c)if the serial communication is on, I can't go to Node-4 (Load) of the menu, the LCD shows weired character and hang..

Previously all working fine for me....

Regards