Has anyone tried USB with the 20 pin PIC18F14K50? Microchip has a Low Pin Count USB development kit with this chip. This chip isn't exactly supported by MeLabs. I made a 18F14K50.INC file and a 18F14K50.BAS file, and with the PBPPIC18 library included, I can compile and run a simple led blink program, but if I include the PBPUSB18 library instead, I get a bunch of warnings about my memory locations:

Warning(219) Invalid ram location specified \PBP\USB18.ASM lines:128, 21, 22, 25 ,etc

In my 18F14K50.BAS file I told it the memory locations were:
BANKA $0000, $005F
BANK0 $0060, $00FF
BANK1 $0100, $01FF
BANK2 $0200, $02FF

What else can I try?

Thanks,

Walter