title: Markdown Report Not Executing in Rstudio
body: <p>I am generating the error:</p>
  
  <pre><code>&gt; options(encoding='UTF-8'); require(knitr); knit('March-2013-Report.Rmd');
  Loading required package: knitr
  
  
  processing file: March-2013-Report.Rmd
    |......................                                           |  33%
    ordinary text without R code
  
    |...........................................                      |  67%
  label: unnamed-chunk-1
  Quitting from lines 4-5 (March-2013-Report.Rmd) 
  Error in evaluate(code, envir = env, new_device = FALSE, stop_on_error = if (options$include) opts_knit$get("stop_on_error") else 2L) : 
    unused argument(s) (new_device = FALSE, stop_on_error = if (options$include) opts_knit$get("stop_on_error") else 2)
  Calls: knit ... process_group.block -&gt; call_block -&gt; block_exec -&gt; in_dir -&gt; evaluate
  
  Execution halted
  
  knitr terminated with status 1
  </code></pre>
  
  <p>when using RSTudio to knit the following code contained within a <code>.Rmd</code> file:</p>
  
  <pre><code>March 2013 - UGA Google Analytics Report
  ========================================================
  
  ```{r}
  2+2
  ```
  
  
  
  ## About this Report
  
  
  ## Future Vision for GA and Web Reporting
  
  
  ## Analysis
  
  
  
  ### Basic Page Stats
  </code></pre>
  
  <p>I usually can debug my errors and am sure that this is something obvious, but what am I doing wrong and why doesn't this compile?</p>
  
  <p>Thanks in advance.</p>
  
  <p>UPDATE:  Session Info</p>
  
  <pre><code>&gt; sessionInfo()
  R version 2.15.0 (2012-03-30)
  Platform: i386-pc-mingw32/i386 (32-bit)
  
  locale:
  [1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United States.1252   
  [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C                          
  [5] LC_TIME=English_United States.1252    
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
  [1] plyr_1.7.1      stringr_0.6.1   rga_0.8         httr_0.2        lubridate_1.2.0
  [6] rjson_0.2.10    RCurl_1.95-1.1  bitops_1.0-4.1 
  
  loaded via a namespace (and not attached):
  [1] codetools_0.2-8 digest_0.5.2    evaluate_0.4.2  formatR_0.6     knitr_1.1.8    
  [6] tools_2.15.0  
  </code></pre>