Can't Get Started with Plotly for R

Following instructions at https://plot.ly/r/getting-started/ does not work on either Windows RStudio or Linux.
No error is returned and no plot is displayed locally. Meanwhile, plotly_POST does work.
Please advise.

R.version
_
platform x86_64-w64-mingw32
arch x86_64
os mingw32
system x86_64, mingw32
status
major 3
minor 2.2
year 2015
month 08
day 14
svn rev 69053
language R
version.string R version 3.2.2 (2015-08-14)
nickname Fire Safety

R.version
_
platform x86_64-redhat-linux-gnu
arch x86_64
os linux-gnu
system x86_64, linux-gnu
status
major 3
minor 2.2
year 2015
month 08
day 14
svn rev 69053
language R
version.string R version 3.2.2 (2015-08-14)
nickname Fire Safety

Inspecting the (empty) viewer, I find:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<script src="lib/htmlwidgets-0.5/htmlwidgets.js"></script>
<script src="lib/plotlyjs-1.0.0/plotly-latest.min.js"></script>
<script src="lib/plotly-binding-2.0.3/plotly.js"></script>
</head>

If you click on “show in a new window” in RStudio, do you get a blank page again in your browser? If not, updating RStudio might do the trick.

Thanks. RStudio 0.99.489 did the trick: