Illustrator not packaging non-Adobe font.

After several vendors have come back asking for missing fonts, I realized Illustrator was not packaging one particular font—Helvetica Neue LT Std 57 Condensed, but it's packaging the Bold Condensed version just fine. I've updated, uninstalled-reinstalled Illustrator, rebooted, and done everything I can think of, and nothing seems to want to package the one font. Doesn't matter the file. I thought I fixed it once (after an update), but it went right back to the same issue. When I've searched for anyone else having this issue, it's usually mentioned that it's due to it being an Adobe font. That's not the case here. My co-worker isn't having an issue. So it's gotta be something specific to me/my settings. Anyone have any thoughts as to what could be the issue? It's quite frustrating since we use that font in all our slugs.