Hi there, guys, I have a problem with Gridflow tutorial...

I want to read Gridflow tutorial, but none of objects in gf_tutorial_info.pd does work (red dotted outline)... they are pddp objects to open gridflow tutorials...

pddp_open GridFlow-1
... couldn't create
pddp_open GridFlow-2
... couldn't create
pddp_open GridFlow-3

Now there are tutorials for pure-data from 1 to 9 that I can found in gridflow/doc/tutorials, but I can't find gridflow tutorials (from 1 to 9)... I am interested in live video tutorials...
Is it a known issue? There is an another way to learn Gridflow (online tutorials or manuals)?
(Sorry for my bad english eheheheh)

Thanks a lot guys