OS X: Series of Settings operations on file fail for elevated installations

patchQtExamplesAndDoc = function(aComponent, aComponentRootPath, aQtInstallationName)
{
    print("Patching doc & examples for: " + aComponentRootPath);
    var fileName = aComponentRootPath + "/" + "bin" + "/" + "qt.conf";
    print("qt.conf file: " + fileName);

    aComponent.addOperation("Settings",
        "path=" + fileName,
        "method=set",
        "key=Paths/Prefix",
        "value=..");

    aComponent.addOperation("Settings",
        "path=" + fileName,
        "method=set",
        "key=Paths/Examples",
        "value=../../Examples/" + aQtInstallationName);

    aComponent.addOperation("Settings",
        "path=" + fileName,
        "method=set",
        "key=Paths/Documentation",
        "value=../../Docs/" + aQtInstallationName);
}