Have you performed a "hard disk install"? Copying the contents of the CD to a folder in your hard drive and installing the game from there... you need to do that in order to edit the original levels and add third party ones. And of course, you'll need to change the file attributes of the "read only" filesfrom the CD after copying them to the hard disk...
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Visit
The Carnivores Saga - a forum devoted to modding Action Forms'
Carnivores,
Carnivores 2 and
Carnivores: Ice Age games
Tres WIP: updated
T-Script Reference and
File Formats documents
Sound name listings for the
Demo (build 117),
Retail (build 116),
Beta 103,
Beta 99,
Beta 97,
Beta 96,
Build 55,
PC Gamer Alpha (build 32) and
E3 1998 Alpha (build 22) TPA files