Crash after multicellular editing (Steam, 0.6.3.0)

(am I not able to make new tags for posts?)

Somehow I may have gotten a refund on organelles that I shouldn’t’ve. I duplicated something after adding flagella and then deleted some in the duplicate. Anyway, I tried to do it again but crashed.

The log has the smoking gun:

ERROR: Unhandled Exception:
ERROR: System.ArgumentException: OrganelleTemplate can't be placed at this location

It is this often reported issue: