Quilt

Due to how the pathes are escaped during testing, the
input of ../myapp.jar gets converted to \\../myapp.jar
(it tries to match .\ and ..\ against myapp.jar and fails)

I'm not 100% sure what that code is doing, so I won't
attach a patch. I suspect that internally you're better
off just sticking with / as the path delimiter
otherwise you open yourself up to a world of pain.