Error reading Starfield nif: Encountered unknown block (BSFaceFX)

[JMPZ11]

I'm trying to get a nif exported of an NPC. Using the Preview window in CK, I exported barret to .nif. Nifskope is unable to open with the error

Pos 6797: Encountered unknown block (BSFaceFX)

Offending file is attached.

barret_export_nif_probly_junk.zip

Thanks!

[fo76utils]

The file uses unknown block types BSFaceFX and BoneModifierExtra, I added those to nif.xml. However, the blocks seem to be empty, the only data field is the block name (4 bytes). Do you have more examples of files that include these blocks, in particular any that include actual data? I also wonder what tool was used to create this NIF, since the new block types do not seem to be used in the base game.