The rename that replaces the settings file now takes the path in the form Windows reads as written, so a data folder past 260 characters, or one whose name is not well-formed UTF-16, saves like any other. Before, every save after the first was refused there. The copy of an invalid file is written to a temporary name and given its kept-aside name only after the save succeeds, so a failed save can no longer overwrite and then delete an earlier copy, and a killed save leaves no duplicate copies. A file over 16 MiB is replaced without a copy. On a volume that needs the fallback move, a reader's open handle is waited out instead of failing the save at once. Refs #46 Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com> Signed-off-by: James Maes <james@kof22.com>