Georgy,

I just tried to translate the manual from command line:

pdflatex CinelerraGG_Manual
pdflatex CinelerraGG_Manual
pdflatex CinelerraGG_Manual
makeindex -s nomencl -o CinelerraGG_Manual.nls CinelerraGG_Manual.nlo
pdflatex CinelerraGG_Manual

It simply works and places Glossary before the list of tables/figures. No
problem at all when run from command line.

I added an index (with just a couple of entries until more can be added).  So this takes 2 more lines.  I just use the simple command lines in a shell:
#!/bin/bash
pdflatex CinelerraGG_Manual.tex
makeindex -s nomencl.ist -o CinelerraGG_Manual.nls CinelerraGG_Manual.nlo
pdflatex CinelerraGG_Manual.tex
makeindex CinelerraGG_Manual.idx
pdflatex CinelerraGG_Manual.tex