The dice images in the Dice zip file only go up to 30, therefore if you are using 'faces' higher than 30 the image will not show up.
A blank blue gif is included in the 'blue' folder (after extracting the dice zip file) and a blank white gif is included in the 'white' folder, depending on which you use, for making numbers higher than 30 for faces 31-100.
OR use this attached zip file for blue octagonal dice numbered 1-100 (originally attached to my post as Rukbat on page 3 or 4 of this thread...) they are in gif format
hope this helps