A numbered level in my multi-level numbering scheme suddenly displays a black box instead of a number.

[necastle]

A numbered level in my multi-level numbering scheme suddenly displays a black box instead of a number. When I open the format multi-level numbering window, the info for that numbering level is locked, the font size of the numbers has gone to 0, but you can still see them in the field, however later numbering levels show that level as being empty. My experience is that once this happens to a numbering level, the template is junk as it seems to be some sort of corruption. But there must be a way to fix it. Any ideas?

 

[Alabalcho]

What software you are using? Word processor? HTML editor?