Dear Nicolas, I believe this is what I did, as the two examples I mention were obtained on two different (virtual) machines. My apologies if I made things unclear. - Valentin On Sun, Nov 4, 2012 at 3:06 PM, Nicolas Braud-Santoni < nicolas@braud-santoni.eu> wrote: > Hello, > > Binaries compiled with OCaml 4 aren't compatible with binaries > compiled with OCaml 3. > As such, you should compile both program and library with the same > (major) version of OCaml and use the appropriate debugger. > > > Regards, > > Nicolas >