I am thinking the full version runs 90 minutes.
adding:
I used to have information on both versions and how to order them from zandig productions but I have misplaced it. I googled a bit and found where Paula Reeves says the full version is 2:90 – but as I am sure it wasn’t 3 1/2 hours long I think this means version 2 is 90 minutes, as I recalled.
http://lostchildrenoftranquilitybay.blogspot.com/Set Production AssistantCamera (color, DV), Viallet; editor, Christophe Bouquet; music, Remy Berger; sound, Verboud. Reviewed at Thessaloniki Documentary Film Festival, March. 12, 2006. Running time on France 2: 90 MIN.
Google offers a lot of hits from fornits. this search brought up 10 pages of hits on the topic.
site:fornits.com The lost children of Tranquility Bay