As of the time of writing this, Galaxy just finished updating my copy of Turok 2. Patch notes are up on Steam, but it looks like there's a bit of a lag time in getting it up here as a direct download.

Until then, full patch notes here:
http://steamcommunity.com/games/405830/announcements/detail/575740768226142774

I get a warning when loading saves from the prior build, but I can proceed past that warning and load my saves regardless.

I'd like them to fix the script triggers constantly failing.

I've had to play the first level twice to complete it because events didn't trigger, and have to do so for the second one too.

Can you gives us a save file where the events don't trigger?

You might want to pick a different hosting site, that one deleted the file before I had a chance to download it.

http://www.fileconvoy.com/dfl.php?id=ga00b8dcc9be9508699995621270d21b55ae4262ce

Up for ten days.

There seems to either be a misunderstanding or perhaps you aren't running the latest version? There seems to be no issues with triggers occurring in either of these save files, in fact the first save is in a level that's already been traversed once before and thus all the triggers run and keys collected.
The latter one I managed to continue fine and found the 3rd sister, completing the objective.

One of the sisters wouldn't spawn in the game before the update. Since there were other reported problems with I didn't feel like trying the game again and finding out it didn't work before the update.

A new beta patch with dx11 support arrived just yesterday on Steam:
http://steamcommunity.com/app/405830/discussions/0/1319962599254521430/

Hopefully it arrives here soon too.

Any ETA on achievements for the GOG version?