Compiler crashes when --moduleResolution is given non-predefined option

[DanielRosenwasser]

> tsc .\two.ts --module commonjs --moduleResolution fahrvergnügen

C:\Program Files (x86)\nodejs\node_modules\typescript\lib\tsc.js:386
        var text = getLocaleSpecificMessage(message.key);
                                                   ^
TypeError: Cannot read property 'key' of undefined
    at Object.createCompilerDiagnostic (C:\Program Files (x86)\nodejs\node_modules\typescript\lib\tsc.js:386:52)
    at parseStrings (C:\Program Files (x86)\nodejs\node_modules\typescript\lib\tsc.js:30466:52)
    at Object.parseCommandLine (C:\Program Files (x86)\nodejs\node_modules\typescript\lib\tsc.js:30426:9)
    at Object.executeCommandLine (C:\Program Files (x86)\nodejs\node_modules\typescript\lib\tsc.js:30721:30)
    at Object.<anonymous> (C:\Program Files (x86)\nodejs\node_modules\typescript\lib\tsc.js:31042:4)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:364:17)

This also works (crashes I mean) if you don't give any option at all.