smcs.exe consistently crashes.

At the bottom of Unity’s Documentation page: Unity - Platform Dependent Compilation

It states you can run “smcs -help”. (on windows, smcs is located at %MY_UNITY_INSTALLATION_FOLDER%\Editor\Data\MonoBleedingEdge\lib\mono\unity\)

This executable crashes consistently, with or without arguments, on 2 machines. Is it just broken, or what?

I’m using Unity 3.5.5f3

Try %MY_UNITY_INSTALLATION_FOLDER%\Editor\Data\Mono\lib\mono\unity\ instead. These multiple versions of mono need careful configuration and setup.

Anyway, what are you trying to do?

And, please don’t post links to non-official sites hosting our documentation. The particular site you linked to has ads on it, and I don’t want customers to think Unity is using ads to fund hosting of the documentation. (And the typically developer will not necessarily know you are linking them to non authorised sites.) Unity is working on a much better and authorised way to let customers translate the docs.