Hmm, so I replaced `%HOMEDRIVE%%HOMEPATH%\user-config.jam` with just `config.jam`, and got the exact same error "the system cannot find the file specified". Not very helpfull... :-(


Is it correct to think that this has nothing to do with boost and is just a Windows/appveyor issue? If so, Stefan, can you create a script that only does the part causing the error. I like to take this to stackoverflow