I downloaded (purchased) fonts from Fonts.com and installed them on my computer. I see them and can use them in my InDesign and Illustrator but when I package the project to send to printer, it fails on the fonts and does not included the newly added fonts. I have uninstalled and re-installed the fonts. Now I discovered (on Fonts.com) the Adobe Extension and have downloaded the Extension Manager and the Fonts.com Extension, which fails with and "invalid signature" message. The Extension Manager is successful and recognizes my Adobe products, but will not load the extension for Fonts.com.
I am running CS6 InDesign, Photoshop and Illustrator (not cloud versions) and have run the latest updates.
CMM