Unfortuntately on some windows boxes (with .NET framework/dev tools installed), jsc is installed at c:\windows\Microsoft.NET\framework64\v4.0.xxxxx
so when execjs runs, it favors jsc over JScript - but uses the jsc support script.
I'm not sure what the best way to discern good jscs from bad jscs but its out there.
Yeah, figured that could be a bad idea. Lets just remove that linux one.
Remove jsc bin
+1 for fastest bug fix :-)