SketchUp 2014 release moves to ruby 2.0
one of the most wonderful things about sketch up is its extension API which in the past has been hampered, tho, by being based on a fairly old (1.5-ish) ruby release, limited runtime library support, and broken documentation.
the documentation issue is still there, but at least the ruby version is now recent and decent 2.0. It also looks like some attempts have been made to make installation and use of 3rd party gems less painfull.
time now to see when kind of logging and threading support there is in this new version...