Anyone know what would cause this on an eDir driver on IDM 3.0.1?

I brought a new server into the tree and added a replica to it of all
partitions. I installed IDM 3.0.1 (to match current version on 'old'
server). I added the new server to the same driver set. I copied the
server specific settings to the new server.

When trying to start the driver on EITHER server now, I get the error
indicated in the subject...

Thanks in advance!