title: Unable to convert data frame to h2o object
body: <p>I am running the h2o package in Rstudio Version 0.99.447. I run version 10.9.5 OSX.</p>
  
  <p>I would like to set up a local cluster within R, following the steps of this tutorial: <a href="http://blenditbayes.blogspot.co.uk/2014/07/things-to-try-after-user-part-1-deep.html" rel="nofollow noreferrer">http://blenditbayes.blogspot.co.uk/2014/07/things-to-try-after-user-part-1-deep.html</a></p>
  
  <p>The first step does not seem to be a problem. What does seem to be a problem is converting my data frame to a proper h2o object.</p>
  
  <pre><code>library(mlbench)
  dat = BreastCancer[,-1] #reading in data set from mlbench package
  
  library(h2o)
  localH2O &lt;- h2o.init(ip = "localhost", port = 54321, startH2O = TRUE) #sets up the cluster
  dat_h2o &lt;- as.h2o(localH2O, dat, key = 'dat') #this returns an error message
  </code></pre>
  
  <p>The above statement as.h2o results in the following error message</p>
  
  <pre><code>Error in as.h2o(localH2O, dat, key = "dat") : 
  unused argument (key = "dat")
  </code></pre>
  
  <p>If I remove the "key" parameter, letting the data reside in the H2O key-value store under a machine generated name, the following error message comes up.</p>
  
  <pre><code>Error in .h2o.doSafeREST(conn = conn, h2oRestApiVersion = h2oRestApiVersion,  
  Unexpected CURL error: Empty reply from server
  </code></pre>
  
  <p><a href="https://stackoverflow.com/questions/27553362/how-to-convert-r-data-frame-to-h2o-object">This</a> question asks the same thing as me, but the solution leads me to the same error.</p>
  
  <p>Does anyone have experience with this problem? I'm not entirely sure how to approach this.</p>