I've been using this font for years, but recently had to install it on a different computer.
Once I've downloaded and installed it to my font book it has for some reason called itself "new" and won't show up in Adobe Illustrator (where I use this font).
Is anyone else having this problem???
This is a pretty urgent problem as I use this font frequently for my business (custom signage)

thanks!

Mac will reject fonts with an OS/2 version number of 0.

Solution: Open with font edior and save.

Tried it your way (using Font Book rather than Font Editor). It says "3 serious errors were found. Do not use these fonts".

Try Type light

https://www.cr8software.net/typex.html

I'm on CS6 on Mac OS 10.11.6, using FontXplorer X pro as a font manager and have just installed and used 18th century without problems.
Is this a problem with High Sierra and the Font Book version that installs with? Or a problem with Illustrator CC?