title: Issue with .Rprofile file when trying to upload to RPubs
body: <p>From what I can gather there is a well documented issue with uploading Rpubs to RStudio. The solution is to create a .Rprofile and with an additional line:</p>
  
  <pre><code>options(rpubs.upload.method = "internal") 
  </code></pre>
  
  <p>and then put the .Rprofile file in your working directory, and restart the program. My issue is that when I attempt this and start up RStudio I am presented with the error:</p>
  
  <pre><code>Error in assign(".popath", popath, .BaseNamespaceEnv) : 
  cannot change value of locked binding for '.popath'
  </code></pre>
  
  <p>Can anyone suggest what I may be doing wrong? What have I missed?</p>