R: source_gist not working : <p>I am trying to use <code>source_gist</code> from the <code>devtools</code> package but I am encountering an error:</p>

<pre><code>&gt; library(devtools)
&gt; source_gist("524eade46135f6348140")
Error in r_files[[which]] : invalid subscript type 'closure'
</code></pre>

<p>Thanks for any advice.</p>
