Yeah I found out there were 2 DoUSBin and 2 DoUSBout labels after I uploaded
the code. I deleted the bottom part of the code. I forgot to note that I use EasyHID too. In my PBP 2.46 folder the 18F2455.INC file looks like below:

;************************************************* ***************
;* 18F2455.INC *
;* *
;* By : Leonard Zerman, Jeff Schmoyer *
;* Notice : Copyright (c) 2004 microEngineering Labs, Inc. *
;* All Rights Reserved *
;* Date : 12/31/04 *
;* Version : 2.46 *
;* Notes : *
;************************************************* ***************
NOLIST
ifdef PM_USED
LIST
"Error: PM does not support this device. Use MPASM."
NOLIST
else
LIST
LIST p = 18F2455, r = dec, w = -311, f = inhx32
INCLUDE "P18F2455.INC" ; MPASM Header
;__CONFIG _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
;__CONFIG _CONFIG1H, _FOSC_HSPLL_HS_1H
;__CONFIG _CONFIG2H, _WDT_ON_2H & _WDTPS_128_2H
;__CONFIG _CONFIG3H, _PBADEN_OFF_3H
;__CONFIG _CONFIG4L, _LVP_OFF_4L & _ICPRT_OFF_4L & _XINST_OFF_4L
NOLIST
endif
LIST
EEPROM_START EQU 0F00000h
BLOCK_SIZE EQU 32

From the drop down menu I choose 18F2455 too. I can give a screen shot I did.



The code looks like:

'
' MyUSB
' =====
'
' File name : MyUSB.pbp
' Programmer: Abdykerim Mamedov
' Date : July 2, 2007
' Device : PIC 18F2455 & 4MHZ crystal
'
'
' Supposed to send and read from USB bus.
'
' Hardware:
' ---------
' Signal genarator (Sinusoidal,triangular or square wave)
' USB cable
' 4 MHZ crystal
'
'
' Software:
' ---------
' The PC interface is not ready yet, but supposed to be VB6 source code
'
'
' Pic Configuration Fuses
' =======================
@ ERRORLEVEL -230

asm
__CONFIG _CONFIG1L, _PLLDIV_1_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
; ; ; USB clock source comes from the 96 MHz PLL divided by 2
; ; [OSC1/OSC2 Src: /1][96 MHz PLL Src: /2]
; No prescale (4 MHz oscillator input drives PLL directly)


__CONFIG _CONFIG1H, _FOSC_XTPLL_XT_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
; ; ; Oscillator Switchover mode disabled
; ; Fail-Safe Clock Monitor disabled
; XT oscillator, PLL enabled, XT used by USB

__CONFIG _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L & _BORV_2_2L & _VREGEN_ON_2L
__CONFIG _CONFIG2H, _WDT_OFF_2H
__CONFIG _CONFIG3H, _MCLRE_ON_3H & _LPT1OSC_OFF_3H & _PBADEN_OFF_3H & _CCP2MX_ON_3H
__CONFIG _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L
endasm

DEFINE OSC 48

'
' Hardware configuration
' ======================
'
' I/O and PORTs
' -------------
TRISA.0 = 1 ' Set pin 0 of PORTA an input
'
' A/D converter
' -------------
ADCON0 = %00000001 ' Configuring Analog Channel Select bits ,
' A/D Conversion Status bit, A/D On bit
ADCON1 = %00001101 ' Configuring Voltage Reference Configuration bits,
' (AN0 analog, others digital), A/D Port Configuration Control bits
ADCON2 = %10001000 ' Configuring A/D Result Format Select bit (Right justified ),
' A/D Acquisition Time Select bits (4 TAD),
' A/D Conversion Clock Select bits (Fosc/64)
'
' USB module
' ----------
UCFG var byte EXT ' include UCFG register... Yeah Melabs didn't
ucfg = %00010100 ' enable internal USB pull-up, Full speed USB

'
' Interrupt definition
' ====================
' TMR0 interrupt used to keep USB connection alive
' by sending USBSERVICE at each 100uSec or so.
INTCON = %10100000 ' Enable global and TMR0 interrupts
T0CON = %10000000 ' TMR0, CLK internal, prescaler 1:2, T0ON

'
' Variables & constants definition
' ================================
USBBufferSizeTX con 8 ' input
USBBufferSizeRX con 8 ' output
USBBufferCount Var Byte '
USBBufferIn var byte[8] ' store incomming USB data
USBBufferOut Var Byte[8] ' store outgoing USB data
DataToSend var BYTE[8] ' store ADCs

@ADRead = ADRESL ; use to read both ADCs register in one shot
ADRead VAR WORD EXT ' make it available to use in PBP
'
' Constants definition
' ====================
TMR0IF VAR INTCON.2 ' TMR0 overflow int flag
TMR0ON VAR T0CON.7 ' TMR0 on/off bit
TMR0IE VAR INTCON.5 ' TMR0 interrupt enable/disable bit
GoDone var ADCON0.1 ' ADC conversion
'
' Macro(s) definition
' ===================
goto SwHwInit ' skip macros
Reload_TMR0:
TMR0ON = 0
TMR0L=65000
TMR0IF = 0
TMR0ON = 1
RETURN
asm
SendUSB macro array
; Use to Copy an specific array to USBBufferOut AND send it
; to USB bus
variable i=0
while i<8
MOVE?BB (array+i),(_USBBufferOut+i)
i+=1
endw
L?CALL _DoUSBOut
endm
endasm

'
' Software/Hardware initialisation
' ================================
SwHwInit:
pause 500 ' Settle delay
usbinit ' initialise USB
GOSUB Reload_TMR0 ; Reload timer0
ON INTERRUPT GOTO DoUSBService
'
' Main program start
' ==================
Start:
'
'
' Do ADC conversion and save it to specific DataToSend array
' ----------------------------------------------------------
PAUSEUS 125 ' arbitrary SamplingTime
GODONE=1 ' start conversion
WHILE GODONE : WEND ' wait 'till finish
DATATOSEND = ADREAD ' save it to DataToSend array

' Send data to USB bus
' --------------------
@ SendUSB _DataToSend
'
' Check if there's any incomming data
' -----------------------------------
gosub dousbin
'
' Redo from start
' ---------------
goto start
END
'
'
' Subroutines area
' ================
'
DoUSBIn:
'
' Check and receive data from the USB bus
' =======================================
tmr0ie = 0 ' disbale TMR0 int
USBBufferCount = USBBufferSizeRX ' RX buffer size
USBService ' keep connection alive
USBIn 1, USBBufferin, USBBufferCount, Timeout ' read data, if available
Timeout: '
GOSUB Reload_TMR0
tmr0ie = 1 ' re-enable TMR0 int
PORTB = USBBUFFERIN[0] ' output to PORTB
return
'
'
'
DoUSBOut:
'
' Send data to the USB bus & Wait for USB interface to attach
' ================================================== =========
TMR0IE = 0 ' Disable TMR0 interrupt
WaitPC: '
USBBufferCount = USBBufferSizeTX ' TX buffer size
USBService ' keep connection alive
USBOut 1, USBBufferOut, USBBufferCount, Waitpc ' if bus available, transmit data
GOSUB Reload_TMR0
tmr0ie=1 ' Re-Enable TMR0 interrupt
return

DISABLE
DoUSBService:
usbservice ' keep connection alive
GOSUB Reload_TMR0 ; reload timer
RESUME ' get out of here
ENABLE

I do not know what the problem is. The errors are not "dying". Isn't there anyone using PBP 2.46 down here. Maybe it's a common problem for 18F series.

Can anyone try this code and inform me?