set ytdl_settings to quoted form of (" --ignore-errors --newline " & YTDL_subtitles & YTDL_STEmbed & YTDL_credentials & YTDL_format & YTDL_remux_format & YTDL_Remux_original & YTDL_description & YTDL_audio_only & YTDL_audio_codec & YTDL_over_writes & YTDL_metadata & YTDL_limit_rate_value & YTDL_verbose & YTDL_Use_Proxy & YTDL_Use_Cookies & YTDL_no_playlist & YTDL_no_part & YTDL_Custom_Settings & YTDL_output_template_new & " " & YTDL_QT_Compat & " " & YTDL_formats_to_download & " ")