Hello Antvar1061,
I am sorry, before sending I checked the validity of the changes. For doing so, I untoggled the visibility of Node 17 NFF_RiverClass but checked and instead toggled that of node 209 NFF_RiverClass_F. And I forgot to reverse it ...
That's what's happening if you do things in a hurry.
Here's the corrected version:
http://www.mediafire.com/file/a5u19f..._RiverClass.7z