18F4550 compiles, 18F4620 does not

The following trivial code compiles if I select 18F4550 via the MCS+ 3.0.0.0 drop down box.
I have tried PBPL ver 2.50 and PBPW ver 2.47.

If I select the 18F4620 I get
Error [115] c:\pbp247\pbppi18.lib 1529 : Duplicate label ("DEBUG" or redefining symbol that cannot be redefined)

There are almost identical messages with PBPW and PBPL. Only the c:\...... varies.

Anyone got any ideas?

Cheers
Brian

''************************************************ ****************
''* Name : Test 18F4620.PBP *
''* Author : Brian Taylor *
''* Notice : Copyright (c) 2007 Brian Taylor *
''* : All Rights Reserved *
''* Date : 18 SEP 2007 *
''* Version : 4.00 *
''* Notes : *
''* : *
''************************************************ ****************

'' ************************ Defines *****************************
DEFINE osc 4 '
DEFINE Loader_Used 1
DEFINE DEBUG_REG PORTC 'Debug pin port
DEFINE DEBUG_BIT 6 'Debug pin bit
DEFINE DEBUG_BAUD 19200 'Debug baud rate
DEFINE DEBUG_MODE 0 'Debug mode: 0 = True, 1 = Inverted


A var byte
B var byte


ShowRevStatus: ' zzzzz remove in runtime version
pause 50
debug $0D, $0A
for a = 2 to 42
read a,b
debug b
next a
debug $0D, $0A

Open and edit the Microchip header file P18F4620.INC. Comment out DEBUG, and save the
file. That will get rid of the error.

LVDCON EQU H'0FD2'
OSCCON EQU H'0FD3'
; DEBUG EQU H'0FD4' ; <--- comment this out & save
T0CON EQU H'0FD5'
TMR0L EQU H'0FD6'

Thank you Bruce and Jeff Schmoyer.

Thank you Jeff for the prompt personal reply.

Bruce's comment above is exactly right and does fix the problem. I must say I usually regard the xxx.inc files as sacred and not to be messed with by amateurs like me.

This is what I did.

I went to c:\mpasm\p18f4620.inc and saved a copy.
I opened c:\mpasm\p18f4620.inc and a couple of pages into the file, at the first instance of the word "DEBUG" I commented out the line with a semi-colon.

OSCCON EQU H'0FD3'
; DEBUG EQU H'0FD4'
T0CON EQU H'0FD5'


Cheers
Brian