I'm having trouble changing the Folder and File settings. In PLAYBACK, the numbers in the upper right corner appear as 100-001, 100-002, 100-003, etc etc etc. I want them to be sequential by date ie: 001-1225, 002-1225, 003-1225 etc. Manual tells me to go to set-up menu, then down to Folder name, then select date option. Have done that but folder stays in standard format. Anyone have any suggestions???