Hi,
I think the problem is that you're mixing up the names of the interrupt source and the interrupt handler. The interrupt source is called IC3DRIF_INT - you can't call the interrupt handler that as well. This compiles just fine:
Code:
Include "DT_INTS-18.pbp"                'Include the interrupt system files.

ASM
INT_LIST    macro   ;IntSource  Label   Type ResetFlag
        INT_Handler IC3DRIF_INT, _InputSignal, ASM, yes
        endm
    INT_CREATE
ENDASM

@   INT_ENABLE  IC3DRIF_INT

Main:
  Toggle PortB.0
  Pause 500
Goto Main


InputSignal:
@ NOP
@ INT_RETURN
/Henrik.