title: BiodiversityR package failing to load
body: <p>I'm trying to load the BiodiversityR package and getting the following error and warning messages:  </p>
  
  <pre><code>library(BiodiversityR)
  
  Loading required package: tcltk
  Error in loadNamespace(j &lt;- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) : 
    namespace ‘pbkrtest’ 0.4-2 is being loaded, but &gt;= 0.4.4 is required
  In addition: Warning message:
  package ‘BiodiversityR’ was built under R version 3.2.5 
  Error: package or namespace load failed for ‘BiodiversityR’
  </code></pre>
  
  <p>I don't understand what it means/what I need to do to fix it. Can anyone please help? Thank you!</p>