Backing up SQL clusters with 2014

I'm backing up two separate SQL clusters.

Each cluster has 2 Win 2012 servers running SQL 2012. I have installed a BE agent on each server. I have four jobs for each cluster, "Server1", "Server2", "ServerCluster" and "SQLInstance". In both clusters, the server backups succeed and the SQL Instance backup succeeds. The ServerCluster backup fails with an error 2000FE07. 

Ideas?