===== Environemt SIZE ===== find and xargs can fail if the environment is to large. I think the limit is 8k. xargs --show-limits shows the actual environment size The configure_profile.sh script sets ORIGINAL_PATH (set by cygwin) to "" to avoid issues ===== OCAMLLIB ===== If the environment variable OCAMLLIB is defined, it takes precedence over the internal paths of ocaml tools. This usually messes up things considerably. A typical failure is Error: Error on dynamically loaded library: .\dlllablgtk2.dll: %1 is not a valid Win32 application. The configure_profile.sh script clears OCAMLLIB, but if you use the ocaml compiler from outside the provided cygwin shell, OCAMLLIB might be defined.