I figured it out! I still had matchblocks instead of matchTiles, which screwed it up. Fixed!
Today I've been working on finally making the texture of the block in your inventory match what the block looks like when placed. I've basically memorized which blocks do what, so I never bothered with it much before. But I realize now that for someone trying to actually use the pack, it'd be pretty confusing. So in the interest of user-friendliness, the next release should make it much easier to find all my cool textures.