I had the same problem. The Facial Expression Data in iClone_Daz_Genesis_Extension_v4_IC7 when applied to a Genesis 3 or 8 male or female character in DAZ Studio 4.10 consistently created 82 timeline frames (at 1 FPS); however, only nine of them contained Head Poser Control information (frames 9 through15 effected eyelid controls, frame 70 effected an open mouth and frame 71 effected a closed mouth with lips tightly pressed together).  Scrubbing over these timeline frames resulted in a corresponding movement in the slider controls under the Parameters window BUT ONLY FOR THESE NINE FRAMES.  No other expressions were mapped to the character's face in DAZ Studio 4.10.
I applied the Facial Expression Data to Genesis 3 and 8 male and female characters--same result.  I uninstalled and reinstalled DAZ Studio 4.10 (also the Public Beta version).  I also tried relocating my Genesis 3 and 8 characters to the public folder "My Daz Connect Library" and to the private folder "My DAZ 3D Library".  None of these efforts worked to produce the other facial expressions.
Then I uninstalled DAZ Studio 4.10 and in its place installed DAZ Studio 4.6.  In version 4.6 the Facial Expression Data now worked as expected for both Genesis 3 and 8 characters.  So then, I reinstalled DAZ Studiio 4.10 without uninstalling version 4.6 and, somehow, all of the Facial Expression Data can now be applied to the characters' heads in version 4.10. 
I hope this helps.

I'm having the same problem that just came up after I installed DS 1.10.  I noticed the morphs are there in 3dxchange after import, they are just not mapped. I'm wondering if the internal naming of something changed with the fbx export and 3dxchange isn't seeing the morphs.  I was able to manually map the morphs. There's some new options on the fbx export panel in DS I think. Perhaps we need to do something there different.

To get the Facekey to work via DAZ 4.10, make sure you click Animations as well as Morphs on Export options. If that doesn't work, try using Daz 4.10 'Public Beta' version. If that doesn't work, maybe reinstall DAZ.

The Facekey DUF's for Genesis 8 can be found in your 'Order History'. Find 3dXChange 7 and look to the right for Bonus/Serial #. It's at the bottom (Iclone Daz Genesis Extension).

Where can I get the DUF files for Genesis 8?
I still have 2 and 3.

I actually have recently noted that the Facekey for Genesis 2 Female (haven't tried male yet) is not coming to 3DXchange with the visemes correctly through 4.10, although the Daz timeline shows them fine prior to export.  (ie "Oh" viseme, smile on Facekey).
It's not a functional issue as the workaround is to use 4.9, 4.8 etc.

Hi,

good news, it`s working!
thanks a lot for the feedback from you all and the time that you dedicated helping me.

Yes, it was a problem with my Daz install (probably when the system updated to 4.10).
I solved reinstalling everything, the whole Daz and all assets.
Just reinstalling the characters was not working, 

Appreciate your support!

Thanks,
Rogerio

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I have tested with DAZ 4.10 and G3, both male and female, and cannot replicate this issue.

Could you check if any other DUF animation files work? Do animations work if you add your own by adjusting facial sliders and setting a key?

Hi,

thanks for the feedback but the problem still persists.
I`m doing exactly the same from this video bellow and having the same result.

I`m using windows 10, not sure if the OS makes any difference.


Post from other user with the same issue:
https://forum.reallusion.com/346357/Daz-Genesis-Plugin-not-working-What-Im-Doing-wrong-here-?Update=1#bm346387



Any help is welcome
Thanks

Do set your framereate to 1FPS. That will make them much easier to see, and insure a quick export.

I'll have to download DAZ 4.10 to test. I currently have 4.9, so it could be quite different.