Looks like you've been busy while I was sleeping.

PBP 2.46 was missing a few registers in the PIC18EXT.bas file.
You can either add these lines to that file, or place them at the top of your program (before the INCLUDE file).
Code:
UIR  VAR BYTE EXT
UIE  VAR BYTE EXT
UEIE VAR BYTE EXT
UEIR VAR BYTE EXT
For the _config depricated warning you can add w = -230 to the 18F2550.inc file ...
Code:
        LIST p = 18F2550, r = dec, w = -311, w = -230, f = inhx32
hth,