Mac64 SaveDialog bug

[yupswing]

When I use the sample code

        var result = Dialogs.saveFile
            ( "Select a file please, or type name"
            , "This additional message will only be shown on OSX"
            , "c:/" // initial path, for windows only
            );
        trace(result);  

The save dialog return a string with C: included

Main.hx:188: /Users/me/Dev/haxe/testDialog/Export/mac64/cpp/bin/testDialog.app/Contents/Resources/c:/test.png

Should I make some #if to set different basepath on different target os or does it support only windows?