Esbern has become a mute!

[Iguanaman]

I finally got all the shouts completed and decided to put the blades back together since I am getting hammered by dragons all the time. Anyway I went back (this is a PC version 1.5 something) and once I got three new recruits for the blades I went to speak with Esbern and while the dialogues are showing up there is no response/recording when Esbern speaks. He simply stands there. The options show up as though he spoke but I never hear anything. Any fix for this?

 

[Rayven]

What's the actual name of the quest in your journal? Is it Dragon Hunting or is it Rebuilding the Blades?

 

[Iguanaman]

It started happening with the "rebuilding the blades" and has continued with "Dragon Hunting" I can see the dialogue and respond as though he were talking but there is no sound nor appearance of him speaking.