Wrong indices were being used to reference materials, resulting in too few materials showing up. It seems that at some point since coding this in the 2.4 codebase and now, the range has changed from [0, totcol) to [1, totcol].
Wrong indices were being used to reference materials, resulting in too few materials showing up. It seems that at some point since coding this in the 2.4 codebase and now, the range has changed from [0, totcol) to [1, totcol].