Error when adding Texture Pack Combiner Mod (Skyrim)

[iNSPiREDS]

When trying to add the final zip file, after compressing all the textures and everything, I get the following error:

"An error occurred whileparsing EntityName. Line 40, position 29."

http://i.imgur.com/TKgPaow.png

Any idea what it could be? I have 118 GB free on the HDD, so I'm guessing that's not it.