Beehive is "already used" as profession block

I attempted to create a beekeeper profession on a new mod, only to find for whatever reason MCreator won't let me use the vanilla Beehive as the job site block since it's "already used" as one. The Beehive is not a job site block in vanilla, nor do I already have a custom profession using it. This also is happening with the Bell and Bee Nest, not sure if any other non-job site blocks are affected.