AGS Checker problem... I think

Hi All

I think I may have found a problem with the AGS checker whilst checking an exported AGS3 file. Upon running the file through the AGS checker I get the following:-

File AGS Version: 3.1

SUMMARY: 1 total error or warning

Parsing Structure and Data 1 error or warning
ERROR: Line 3991 - Group '?IPID' is missing the follow key heading(s): ?IPID_TESN (Rule 6)

Problem? Having looked up the ?IPID table in the AGS V3.1 Manual there is no ?IPID_TESN field in that table! Have I missed an update to that table structure or is the AGS checker playing silly bug***s?

Miles