The NetherEx support json file doesn't seem to do anything. For instance, the frostburn ice has glass footstep sounds, despite the fact the netherex.json file is supposed to set it to ice footsteps. I gave the file a quick look over, and the syntax seems to be fine, it just doesn't seem like it's being loaded correctly.

DS: 3.4.9.14
Forge: 14.23.4.2739
MC: 1.12.2

NetherEX appears to have gotten a massive update, but I currently can't fix support for it. @OreCruncher

On a side note OreCruncher, you won't need to axe albedo support. All of Elucent's mods got picked up by another dev, with Elu's permission. @EpicSquid

Well, the only reason I tested NetherEx was because of the update. However, I recall that support was still broken even for earlier NetherEx versions, so I'm not sure what's going on here.

The internal mod ID changed from "netherex" to "nex". Geez.

EDIT: And there was some class/item renaming to boot.

Perhaps for a bit of extra support, some lines to give tilled soul sand and thornstalks extra sounds:

"nex:thornstalk": "NOT_EMITTER",
"nex:thornstalk+foliage": "straw",
"nex:tilled_soul_sand": "quicksand"

The internal mod id has never been changed, it has always been "nex". Block names have changed, that is probably why your support no longer works.

Pushed v3.4.9.15 to CurseForge with a fix.