[JBotAlan]

I have not seen this particular error, however, I have a few suggestions:
-Are you running the versions of MPLAB and C18 that came in the 2006 KOP? If not, there's your problem--newer versions of the C18 compiler will not work to compile our robot code.
-Have you tried a clean build? Does MPLAB say "Deleting file.... .o" a few times before it compiles?
-Which code are you trying to compile?

Good luck
JBot

EDIT: HAH! dhoizner beat me! Oh well, I'll leave this here anyhow