Its vital the main script.c has the name "script"?
Is the only difference founded.
I try changing my levels.txt for the avengers levels.txt and import some stages and work fine in the avengers demo.
The problem is my mod.
Then:
1. The levels.txt is working.
2. The script.txt with line alwaysupdate 1 it's ok.
3. The loading.c is courtesy of your help and tested.
Something is wrong, but what...