Per Exception in World_New: boost::interprocess::intermodule_singleton initialization failed · Issue #2409 · supercollider/supercollider · GitHub, this is fixed in current development builds.
“Bleeding edge” builds: http://supercollider.s3.amazonaws.com/builds/supercollider/supercollider/win64/develop-latest.html
In fact Marcin mentioned bleeding edge builds here but maybe you thought it wasn’t important. It is.
Uhm… sorry? (What do you want anyone to say?)
hjh