title: Error while installing shiny package in R
body: <p>This is my code:</p>
  
  <pre><code>install.packages("shiny")
  </code></pre>
  
  <p>Then in the output its showing like this:</p>
  
  <pre><code>Installing package into ‘C:/Users/werd/Documents/R/win-library/3.1’
  (as ‘lib’ is unspecified)
  also installing the dependencies ‘Rcpp’, ‘bitops’, ‘httpuv’, ‘caTools’, ‘RJSONIO’,           ‘xtable’, ‘digest’, ‘htmltools’
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/Rcpp_0.11.2.zip'
  Content type 'text/html; charset=UTF-8' length 1600 bytes
  opened URL
  downloaded 1600 bytes
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/bitops_1.0-6.zip'
  Content type 'text/html; charset=UTF-8' length 1600 bytes
  opened URL
  downloaded 1600 bytes
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/httpuv_1.3.0.zip'
  Content type 'text/html; charset=UTF-8' length 1596 bytes
  opened URL
  downloaded 1596 bytes
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/caTools_1.17.zip'
  Content type 'text/html; charset=UTF-8' length 1598 bytes
  opened URL
  downloaded 1598 bytes
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/RJSONIO_1.3-0.zip'
  Content type 'text/html; charset=UTF-8' length 1598 bytes
  opened URL
  downloaded 1598 bytes
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/xtable_1.7-3.zip'
  Content type 'text/html; charset=UTF-8' length 1600 bytes
  opened URL
  downloaded 1600 bytes
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/digest_0.6.4.zip'
  Content type 'text/html; charset=UTF-8' length 1596 bytes
  opened URL
  downloaded 1596 bytes
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/htmltools_0.2.4.zip'
  Content type 'text/html; charset=UTF-8' length 1598 bytes
  opened URL
  downloaded 1598 bytes
  
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/shiny_0.10.1.zip'
  Content type 'text/html; charset=UTF-8' length 1596 bytes
  opened URL
  downloaded 1596 bytes
  
  Warning in install.packages :
  error 1 in extracting from zip file
  Warning in install.packages :
  cannot open compressed file 'Rcpp/DESCRIPTION', probable reason 'No such file or   directory'
  Error in install.packages : cannot open the connection
  </code></pre>
  
  <p>The last part of the output of the program is showing the error.
  I went to the target folder and found that no zip file is downloaded.
  Also, i am having winzip with me.</p>
  
  <p>The last part of output of program is:</p>
  
  <pre><code>Warning in install.packages :
  error 1 in extracting from zip file
  Warning in install.packages :
  cannot open compressed file 'Rcpp/DESCRIPTION', probable reason 'No such file or   directory'
  Error in install.packages : cannot open the connection
  </code></pre>
  
  <p>Kindly help me what to do.</p>