Problem above address 19720h

[Marcick]

Sorry I posted also on Melabs forum, hopeing to quicker reads comments:

I started to have unexpected behaviours in my program with a PIC18F67K22 (128k).
After some days of debugging I finally discovered that troubles happens when I call a piece of code that is above address 19720h
This is a sample program that show what I mean
In this situation it works correctly. If I change to "@ ORG 19730h" it starts to do crazy things, reset, etc
Where can be the problem ?
Thanks

#CONFIG
CONFIG RETEN = ON ; Enabled
CONFIG INTOSCSEL = LOW ; LF-INTOSC in High-power mode during Sleep
CONFIG SOSCSEL = DIG ;
CONFIG XINST = OFF ; Disabled
CONFIG FOSC = INTIO2 ; Internal RC oscillator
CONFIG PLLCFG = OFF ; Enabled
#ENDCONFIG

OSCCON =110000 ; Primary oscillator, internal 16MHz+PLL.
OSCCON2.0 =1
OSCTUNE.7 =1
OSCTUNE.6 =1 ' enable PLL -->> 64MHz
Define USE_LFSR 1
DEFINE OSC 64
DEFINE HSER2_RCSTA 90H
DEFINE HSER2_TXSTA 24H
DEFINE HSER2_BAUD 115200
Led VAR PORTB.3
w0 VAR WORD
goto pippo


@ ORG 19720h ' (does not work if I change to 19730h or above)
pippo:
random w0
high led
pause 150
low led
pause 150
Hserout2["ORG " ,#w0,13,10]
goto pippo