Was it a "texture only" file or a file with a aircraft in

Well clearly it contains an aircraft file, otherwise he wouldn't even have a textured aircraft showing up.
Reginald, I've copied a section from my iFDG A319 aircraft.cfg over, all you will need to do is change the number in the [FLIGHTSIM.X] (add one to the previous number in the section before) section:
[fltsim.X]
title=A319-100 CFM EasyJet UK
sim=A319_CFM_IFDG_011
model=CFM
panel=
sound=
texture=ezy_100th
kb_checklists=
kb_reference=
atc_id=
atc_airline=EASY
atc_flight_number=121
atc_heavy=0
ui_manufacturer=Airbus
ui_type=A319-100
ui_variation=easyJet UK 100th
description=
[fltsim.X+1]
title=A319-100 CFM EasyJet UK
sim=A319_CFM_IFDG_011
model=CFM
panel=
sound=
texture=ezy.cmon
kb_checklists=
kb_reference=
atc_id=
atc_airline=EASY
atc_flight_number=121
atc_heavy=0
ui_manufacturer=Airbus
ui_type=A319-100
ui_variation=easyJet UK
description=
Copy this and paste it into your iFDG A319 aircraft.cfg. Remember to put the texture folder straight into the main aircraft folder ;)