@pyfave windows 10 Pd 47.0 is in Program Files(x86) downloaded Gem installer (is not in deken) Gem installer puts Gem in pd/extra in Prefernces added new lib: Gem startup Pd: Gem can't load library [declare -stdpath Gem -stdlib Gem] doesn't work either. can you tell me how is your setup in which it works? thanks, rolf