It's been a while I'm thinking of making a working USB connection. So tonight I feel ready to mount the project, program the PIC and plug it in the USB port. Everything looks very clear in the document but MPLAB is not so sweet... After many hours of error messages, changing program location, testing many settings, I'm here now asking for help.

This is the farthest I can go with MPLAB :

Clean: Deleting intermediary and output files.
Clean: Done.
Executing: "D:\Program Files\mcc18\bin\mcc18.exe" -p=18F4550 /i"C:\MCHPFSUSB\fw\Boot" "main.c" -fo="C:\MCHPFS~1\fw\Boot\_output\main.o" -scs
Executing: "D:\Program Files\mcc18\bin\mcc18.exe" -p=18F4550 /i"C:\MCHPFSUSB\fw\Boot" "usbmmap.c" -fo="C:\MCHPFS~1\fw\Boot\_output\usbmmap.o" -scs
Executing: "D:\Program Files\mcc18\bin\mcc18.exe" -p=18F4550 /i"C:\MCHPFSUSB\fw\Boot" "usbdrv.c" -fo="C:\MCHPFS~1\fw\Boot\_output\usbdrv.o" -scs
Executing: "D:\Program Files\mcc18\bin\mcc18.exe" -p=18F4550 /i"C:\MCHPFSUSB\fw\Boot" "usb9.c" -fo="C:\MCHPFS~1\fw\Boot\_output\usb9.o" -scs
Executing: "D:\Program Files\mcc18\bin\mcc18.exe" -p=18F4550 /i"C:\MCHPFSUSB\fw\Boot" "usbdsc.c" -fo="C:\MCHPFS~1\fw\Boot\_output\usbdsc.o" -scs
Executing: "D:\Program Files\mcc18\bin\mcc18.exe" -p=18F4550 /i"C:\MCHPFSUSB\fw\Boot" "usbctrltrf.c" -fo="C:\MCHPFS~1\fw\Boot\_output\usbctrltrf.o" -scs
Executing: "D:\Program Files\mcc18\bin\mcc18.exe" -p=18F4550 /i"C:\MCHPFSUSB\fw\Boot" "boot.c" -fo="C:\MCHPFS~1\fw\Boot\_output\boot.o" -scs
Executing: "D:\Program Files\mcc18\bin\mplink.exe" /l"D:\Program Files\mcc18\lib" /k"D:\Program Files\mcc18\lkr" "D:\Program Files\Microchip\MPASM Suite\LKR\18F4550.lkr" "C:\MCHPFSUSB\fw\Boot\_output\main.o" "C:\MCHPFSUSB\fw\Boot\_output\usbmmap.o" "C:\MCHPFSUSB\fw\Boot\_output\usbdrv.o" "C:\MCHPFSUSB\fw\Boot\_output\usb9.o" "C:\MCHPFSUSB\fw\Boot\_output\usbdsc.o" "C:\MCHPFSUSB\fw\Boot\_output\usbctrltrf.o" "C:\MCHPFSUSB\fw\Boot\_output\boot.o" /o"MCHPUSB.cof" /M"C:\MCHPFS~1\fw\Boot\_output\MCHPUSB.map"
MPLINK 4.00, Linker
Copyright (c) 2005 Microchip Technology Inc.
Error - could not find definition of symbol 'ADCON1' in file 'C:\MCHPFSUSB\fw\Boot\_output\main.o'.
Errors : 1

BUILD FAILED: Fri Aug 25 19:29:12 2006

I know it's not easy to follow but the error seems to came from mplink.exe, but don't ask me why ADCON1 is not define.

If you have any idea it will be appreciate thank you.