kue: wrong number of arguments for 'set' command

Using the sample code (below) on version 0.9.1 fails with the error message below. If I install kue version 0.8.12 it all works properly.

var kue = require('kue')
 , queue = kue.createQueue();

queue.process('email', function(job, done){
  email(job.data.to, done);
});

function email(address, done) {
  if(!isValidEmail(address)) {
    //done('invalid to address') is possible but discouraged
    return done(new Error('invalid to address'));
  }
  // email send stuff...
  done();
}

fiveapp@brooks:~/dashboard/pdfKue$ node .

/home/fiveapp/dashboard/pdfKue/node_modules/kue/node_modules/redis/index.js:575
                throw callback_err;
                      ^
Error: ERR wrong number of arguments for 'set' command
    at ReplyParser.<anonymous> (/home/fiveapp/dashboard/pdfKue/node_modules/kue/node_modules/redis/index.js:317:31)
    at ReplyParser.emit (events.js:95:17)
    at ReplyParser.send_error (/home/fiveapp/dashboard/pdfKue/node_modules/kue/node_modules/redis/lib/parser/javascript.js:296:10)
    at ReplyParser.execute (/home/fiveapp/dashboard/pdfKue/node_modules/kue/node_modules/redis/lib/parser/javascript.js:181:22)
    at RedisClient.on_data (/home/fiveapp/dashboard/pdfKue/node_modules/kue/node_modules/redis/index.js:547:27)
    at Socket.<anonymous> (/home/fiveapp/dashboard/pdfKue/node_modules/kue/node_modules/redis/index.js:102:14)
    at Socket.emit (events.js:95:17)
    at Socket.<anonymous> (_stream_readable.js:765:14)
    at Socket.emit (events.js:92:17)
    at emitReadable_ (_stream_readable.js:427:10)