"Job fails as some source is not available" when invoking on cluster

[lukode]

I've already seen #60, but in this case no passwords are used. I'm trying to invoke one of the examples (Pi) on a cluster comprising of my local machine only. When running the example with new Cluster("local[2]") it all works fine, but as soon as I use a cluster.lst I get the "Job fails as some source is not available" error.
My cluster.lst has:
Test,7077
localhost
And the client is invoked with:
-port 7077 -jobports 8888-8890

Any idea what might be causing this?