I think the $75 dollars version is in reference to Qubicle. They have a base version available on steam (as of this post) for 20, with options to download additional content. utility mod $20, mesh mod $25, voxelizer mod, $25 and commercial license mod for $100. Or the full version for $175.
yup, I did notice in the screenshot it was the demo version, so it might not have the right features or options available.
But as @8BitCrab stated it might be better to start off with magicavoxel or voxelshop, first before investing to much into a program you may not use very much. (don’t get me wrong) I hope you enjoy making voxels and make a lot of them but if this a new hobbie, cutting your teeth on something less expensive may be the best path.
I just recently began to make a few items and a little mod and I use maigcavoxel. I have not had any problems with it.
Just another thought. Can you upload the mod, it may be a .json issue related to the .qb. You can also verify your .json files at http://jsonlint.com/ I say this because I left out one } in the en.json when I was making my mod and StoneHearth would not even lauch.
also to fix the display name when you are looking at the sword on the character sheet. change the unit_info, from .death_sword.display_name to .death_sword_ghost.display_name . It is in the death_sword.json file.