title: skip and autostart in fread
body: <p>I am using the following code to read a file with the data.table library:</p>
  
  <pre><code>fread(myfile, header=FALSE, sep=",", skip=100, colClasses=c("character","numeric","NULL","numeric"))
  </code></pre>
  
  <p>but I get the following error:</p>
  
  <pre><code>The supplied 'sep' was not found on line 80. To read the file as a single character column set sep='\n'.
  </code></pre>
  
  <p>It says it did not find sep on line 80, however I set skip=100 so it should not pay attention to the first 100 lines.</p>
  
  <p><strong>UPDATE:</strong>
  I tried with skip=101 and it worked but it skips the first line where the data starts</p>
  
  <p>I am using version 1.9.2 of the data.table package and R version 3.02 64 bit on windows 7</p>