ORA-24155 - Why am I getting this error when creating a chain rule
I never did find a "proper" way to resolve this, but I was able to fix by:

select * from sys.scheduler$_job for update -- manually remove a running job
-- Delete the job from this table

The job kicked off and then the machine was rebooted in the middle of the job.

Later, the job was deleted, but apparently the old ruleset still existed somewhere in the database even though there wasn't a record of the ruleset existing (EG: data was still there, but the meta saying it was there did not exist).  When I deleted the job object from the appropriate table, it gave me a different ruleset when I passed it "null" to the ruleset parameter.  I guess it was somehow pulling the old rule set and the name was being detected as a duplicate.