title: read.table() error, even though all elements are present
body: <p>I'm getting an error with read.table():</p>
  <pre><code>data &lt;- read.table(file, header=T, stringsAsFactors=F, sep=&quot;@&quot;)
  Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings,  : 
    line 160 did not have 28 elements
  </code></pre>
  <p>I checked line 160, and it did have 28 elements (it had 27 @ symbols).</p>
  <p>I checked all of the 30242 lines there were 816534 @ symbols, which is 27 per line, so I'm pretty sure every single line has 28 elements. I also checked the file to confirm that there were no @ symbols anywhere else other than as separators.</p>
  <p>Does anyone have an idea of what's going on here?</p>
  <p>edit: Line 160 of file</p>
  <pre><code>158@Mental state: 1. Overall clinical symptoms@MD@S@2002@CMP-005@02@20.67@23.58@Clozapine versus typical neuroleptic medication for schizophrenia@IV@4.47@02@SENSITIVITY ANALYSIS - CHINESE TRIALS@CD000059@6.94@Fixed@16@5@2@45@Chinese trials@YES@Xia 2002 (CPZ)@STD-Xia-2002-_x0028_CPZ_x0029_@579@566@40
  </code></pre>
  <p>edit2: Line 161 of file</p>
  <pre><code>159@Length of surgery (minutes)@MD@Y@1995@CMP-001@01@59.0@47.0@Gamma and other cephalocondylic intramedullary nails versus extramedullary implants for extracapsular hip fractures in adults@IV@23.9@01@Summary: Femoral nail (all types) versus sliding hip screw (SHS)@CD000093@13.3@Random@12@1@1@53@Gamma nail@YES@O'Brien 1995@STD-O_x0027_Brien-1995@958@941@49
  </code></pre>