Hi, Sorry it took so long to respond, I was hoping to have the next build out with a permanent fix by now, but alas.
So your file isn't loading in properly due to a negative symmetry count on the last ring. In line 173 of your JSON file, there is this text:
"symmetryCount": -4,
If you change it to:
"symmetryCount": 4,
Your file should load in properly.
The current version of the UI still allows this value to go negative even though it's not intended to. It'll have a permanent fix in the next release.