Yep, I'm dumb.

Try again. I updated the same zip file linked to above.
Sorry about that. This time I actually tested it.
BTW: the chd files should be in the main folder, not like xiistag\xiistag.chd
I can make it recursively look for zip/7z/chd's but that may get you into trouble if you ever pointed it into a huge folder of roms. let me know if you need that.