The Angel, Devil, Fairy and Bat follower chat is not working at present. This is due to changes in llGiveInventory.
When a follower is summoned, a notecard called 'words' is sent from the summoner to the follower. This is not able to happen right now and thus the chat script is broken.
I am hoping that the Lindens will find a way around this soon. I have seen problems with other products in the past due to scripting changes in LSL. This is why we wait to see what happens before updating products to overcome changes.
If nothing changes in a few weeks. I will release a free update to overcome this and our followers will chat again.
Watch this space for futher info
Garth Fairlight