Hi, Today I decided to look closer at Janestreet's Core library. http://www.janestreet.com/ocaml/janestreet-ocamldocs/core/index.html I have tried to install it via GODI. ("godi-janestreet-core-107.01godi5") I have attached the relevant log-file. I am not sure how to proceed. How do your systems behave? Are you currently able to install it?