I'm in the midst of building a font family in FontLab and am having some trouble getting the fonts to display in the correct order in font drop-down menus when I finally install them. Sometimes they work, but sometimes they are out of order, which makes it all the more baffling to me.

This family has nine weights, and all the weight names and numbers are pretty standard. I've checked and double-checked and it doesn't seem like I've done anything wrong.

The data for the weights I've entered into FontLab are as follows:

Light (300)
Book (400)
Roman (500)
Medium (600)
Semibold (700)
Bold (800)
Heavy (900)
Black (1000)
Ultra (1100)

However, in the Illustrator "style" dropdown menu for this font, the weights display in the order "Black, Light, Book, Roman, Medium, Semibold, Bold, Heavy, Ultra". Is there something besides the numbers I should be checking for? The rest of the naming scheme also seems to be correct, but for some reason the ordering of the weights continues to be finnicky.

Thanks!