As the title says, I'm having extreme difficulty doing it. I know they changed the format around a bit, but I even went as far as to rip all the assets from the 1.13 jar and pasted and renamed all the old textures into it. It just does not work at all for whatever reason. For the life of me, I can't figure out why. The only textures that work are GUI ones and one 3D item I made for it. The rest do not work. The only thing I can think of is that it doesn't read 32x32 textures anymore, but that doesn't make sense as the 3D item was using a 32x texture.

Can someone help me figure out why this pack doesn't work?

Also, the new format doesn't seem to have any sound folders anymore so all the sounds I had changed no longer have a place to go. Anyone got any ideas on that?

Here is the pack:
http://www.mediafire.com/file/i6cndw43kgwyezb/Lyoko_1.13.zip/file

Update:

Figured it out. The pack.mcmeta was incorrect. Got it to work now. No idea how to delete this.