Trying to plot createTreeView and get the Error in tools:::httpdPort > 0L
<p>Recently, I started using R Revolution, and I tried to run a example code to visualize a decision tree.</p>

<p>I ran the code:</p>

<pre><code>data("kyphosis", package="rpart") 
kyphTree &lt;- rxDTree(Kyphosis ~ Age + Start + Number, data = kyphosis, cp=0.01) 
library(RevoTreeView)
plot(createTreeView(kyphTree))
</code></pre>

<p>And got the error:</p>

<pre><code>Error in tools:::httpdPort &gt; 0L : 
  comparison (6) is possible only for atomic and list types
</code></pre>

<p>I searched about this error, I'm using the R 3.2.2 and already updated my Rstudio.</p>

<p>Someone could help me?</p>

<p>Tks,</p>