I get 'Error[113] c:\Progra~1\picbas~1\incfil~1\pbppi18l.lib : Symbol not previously defined (HIGHINT)' whenever I try to compile the program. Best I can tell, this is straight by the book. I use ASM/ENDASM to put in assembly code so I know I get to MPASM. Also I have PBPL checked.
The part I'm using is 18F8520 and I need the interrupts.

Why the Error? and is there a list of Error codes that I can get?

My extremely shortened program -

DEFINE OSC 20
Goto Start

DEFINE INTHAND HIGHINT
DEFINE INTLHAND LOWINT

Start: