Using a "//" prefix resolves to the root directory which isn't a good default as it typically doesn't have write permissions. Only set the name and let the file selector pick a directory to use (matches how saving from the text editor works).
Using a "//" prefix resolves to the root directory which isn't a good default as it typically doesn't have write permissions. Only set the name and let the file selector pick a directory to use (matches how saving from the text editor works).