Run the otfvalid command in Terminal. If errors appear, extract fresh copies from the original DVD. Some fonts from 11.1 have corrupted name tables. Use DTL OTMaster (free trial) to rebuild the tables.
If you cannot find a legitimate copy, or if your legacy DVD is scratched, consider these modern equivalents:
: Fonts can be embedded into PDFs for printing and viewing. While not licensed for live "web text" (serving fonts from a server), they can be used to create images like GIFs or PNGs for web use. font folio 11.1
A single font file can contain thousands of glyphs.
The answer depends on your workflow.
: Version 11.1 updated the library with better support for features like swashes, small caps, and old-style figures. 3. Licensing and Usage Font Folio 11 - How to install/manage? - Adobe Community
Font Folio often provides more straightforward licensing for those needing to install fonts on a local server for a large team. Run the otfvalid command in Terminal
: Unlike the subscription-based Adobe Fonts (Typekit), Font Folio 11.1 provided a one-time purchase license that does not expire.