title: forecast.HoltWinters : function not found error message remote machine but same code run in another machine
body: <p>I am using R version 3.4.1 (2017-06-30) in remote machine and  R version 3.3.2 (2016-10-31) n my desktop 
  In the remote machine, it's throwing me an error by saying forecast.HoltWinters not found</p>
  
  <p>I have kept exact replica of all inputs required in both machine </p>
  
  <p>I have cross checked all the required packages are installed </p>
  
  <p>I am not sure where I am doing wrong can some one help to resolve this issue?</p>