Hi, looking at the code of the support script "mesh_additions.rb"
I found a line of code that make me think, according the context of the script, that is an code error or typo (IMHO)

    
65    i1 = index_array[0]
66    for i in 1...numpts do
67        i2 = index_array[i]
68        n1 = i1.length
69        n2 = i2.length
70        nest if( n1 < numsegments && n2 < numsegments )

I think that in line 70 should be next instead of nest.
There is no reference to "nest" in the index of methods in SketchUp Ruby API, and searched for some reference to "nest" in Ruby to no avail.

Thanks in advance