Support for uni-directed edges in Titan 0.5.4/Hadoop?

[Alex DeBurie]

We are able to create sequence files from a Titan graph (Cassandra).

However, any attempt to read the data back (via Spark, or another Titan/Hadoop job) fails here:

    public SimpleFaunusEdge(FaunusEdgeLabel label, FaunusVertex vertex) {

        Preconditions.checkArgument(label.isUnidirected(),"Invalid edge label: %s",label);

        this.label = label;

        this.vertex = vertex;

    }

Not sure how the data was written successfully, but, does anyone know a work-around?