title: Trouble re-installing data.table on 32bit computer
body: <p>I have a 32bit Windows computer (it's a work computer that can't be changed), running R 3.6.3.
  When I install data.table 1.13.2, it fails to install (see below). Any help is highly appreciated!</p>
  <pre><code>Warning in install.packages: 
  problem copying C:\Documents\R\win-library\3.6\00LOCK\data.table\libs\i386\datatable.dll to C:\Documents\R\win-library\3.6\data.table\libs\i386\datatable.dll: Permission denied.
  Warning in install.packages: 
  restored 'data.table'.
  
  library(data.table)
  ...
  error: This is R 3.6.3 but data.table has been installed using R 4.0.3. The major version must match. Please reinstall data.table.```
  
  
  </code></pre>