After many frustrations I decided to just release the current work I was doing on Rupture Farms 1 (Mudokon Enrichment Center 2).
Basically I stopped when I found that adding new cams to previously empty screens on R1 was unreliable at best. I know I didn't do anything wrong from my end because I managed to get the new screen to work when starting afresh (with the necessary preloader and continue zones objects, etc).
The next level I work on will probably be in Rupturefarms 2.
Level: Rupture Farms I (Mudokon Enrichment Center 2).
Difficulty: Normal.
Download: http://www.megaupload.com/?d=E947LKIR