Error on listing sd's files with number in second position

[murdock62]

Description Crashing extruder on X while homing after cancelling print

Name a file [a letter][a number]....".gcode"

For example : "D3S.gcode"

Actual behavior:

The screen will display "???" as filename.

Additional Information

If the number is in third position no problem.

[klack]

??? is now always seen as a bad sdcard and fixed with a new one