Fonts in CS6 no longer recognized

Hi, 

Are you sure Cochin is enabled in FontBook? (Cochin comes standard with Mojave.)

If Cochin is enabled, there is no problem using Cochin Bold with Mojave + Photoshop CS6.

An additional comment.
If you are currently using "13.0", please update to "13.0.6".

https://supportdownloads.adobe.com/product.jsp?product=39&platform=Macintosh

https://supportdownloads.adobe.com/thankyou.jsp?ftpID=5676&fileID=5700

Theresa's comment brought to mind a similar situation that happened to me several years ago. At my work, there was a big update to Windows and many of the fonts changed from postscript to true type, or something like that. Same font names no longer worked with all my old artwork. Royal PIA! So basically, you have to do what Theresa said and find the font online and install it on your new computer.

Fonts are installed with the operating system. They are not part of Photoshop. Maybe Cochin is not part of the Mojave OS. I don't know that for sure though. You can do a google search for the font and find a place to download it from online.

how do you know its still installed in your machine? is it in the font manager? 

also:

Adobe strongly recommends that customers update to the Photoshop 2019 release prior to updating to macOS 10.14 Mojave. Older versions of Photoshop were not designed, nor extensively tested to run on macOS Mojave

https://helpx.adobe.com/photoshop/kb/photoshop-and-macosmojave.html