[Swift-user] "Could not find valid host" on tutorial examples

[Dave Dykstra]

I have been getting the following error on both the tutorial 3.6.1 regexp
mapper and 3.6.2 fixed array mapper example:

    Swift svn swift-r3826 cog-r2988

    RunID: 20110216-1644-pddxkqn3
    Progress:
    Execution failed:
	    Could not find any valid host for task "Task(type=UNKNOWN, identity=urn:cog-1297896282664)" with constraints {tr=wc, filenames=[Ljava.lang.String;@3465b738, trfqn=wc, filecache=org.griphyn.vdl.karajan.lib.cache.CacheMapAdapter at 1dfd868}

For completeness, here's the fixedarray.swift that the above error was
generated from, as taken directly from swift-0.91/examples/swift:

    type messagefile {} 
    type countfile {} 

    (countfile t) countwords (messagefile f) {   
	app {
	    wc "-w" @filename(f) stdout=@filename(t);
	}
    }

    string inputNames = "one.txt two.txt three.txt";
    string outputNames = "one.count two.count three.count";

    messagefile inputfiles[] <fixed_array_mapper;files=inputNames>;
    countfile outputfiles[] <fixed_array_mapper;files=outputNames>;

    outputfiles[0] = countwords(inputfiles[0]);
    outputfiles[1] = countwords(inputfiles[1]);
    outputfiles[2] = countwords(inputfiles[2]);

At this stage in my experience with swift I have no idea what to do
about it, can anyone here help?

- Dave