Does anyone know what this error means and how to fix it? We were running fine Monday and now errors out on iso's that were working prior to this error. Help is greatly appreciated.

Personal ISOGEN failed while running ISOGEN module (Code -2)
[Personal ISOGEN error -2]

Message file:
Personal ISOGEN : VERSION 5.6.10 (Full)

*** IDFGEN VERSION 6.6.2 (Build 07) ***
START OF ISOGEN.PCF


PROCESSING PIPELINE-REFERENCE TEMP SPOOL

New END-POSITION-NULL generated
49: 180 227.5000 23.0000 168.7941 0 0 0 0 0, , 0, , 0 0
50: -36

ALL COMPONENTS CONNECTED


SOFTWARE KEY ID NO. = 0
NO. OF AUTHORISED PLOTS = 0
NO. OF UNUSED PLOTS = 0