Solution to Briefings not showing up.
 

I've encountered this many times over the past year or so.

TD... maybe start a common issues thread?

If you can't read briefings but other squadmates can...

Avoid spaces in your mission folders. Avoid periods. Especially if your installation folder has spaces and a dot in it such as:

c:\games\fb 4.13\missions\net\coop\4.13m Missions\

etc.

Remove those periods especially.
I've also seen this solved by removing spaces, but of course, we've seen spaces in folder names before (PE2 missions) and it works fine.