Error running remote carte job with repository

I'm using CE 4.4.0 and a MySql repository (each on separate servers). I can execute a single Transform remotely, but if I try to execute a Job that calls the Transform (referenced via the Repository), the remote job submission fails with:

org.pentaho.di.core.exception.KettleException:
Unable to connect to the repository with name 'falcon-repo'


at org.pentaho.di.job.JobExecutionConfiguration.<init>(JobExecutionConfiguration.java:509)
at org.pentaho.di.job.JobConfiguration.<init>(JobConfiguration.java:68)
at org.pentaho.di.job.JobConfiguration.fromXML(JobConfiguration.java:76)
at org.pentaho.di.www.AddJobServlet.doGet(AddJobServlet.java:99)

I have the repositories.xml file copied to the slave server (if you don't you get a different error). I can ping the MySql server from the slave server. The error message doesn't give me any information that could help troubleshoot.

What else can I verify?