I installed RStudio (via Anaconda). I have Version 1.1.456
It all works as I would expect except for "Open File" and "Save". If I try to open a valid file, I just get a blank buffer in my editor. When I try to "Save" a file, it creates a file, but with 0 file-size. And I can confirm it is empty.
I've looked for solutions on this Forum and elsewhere. Others complain that attempting to open a valid file can actually nuke the contents of that file.
For now, I'm copying/pasting the buffer into a separate text-editor to save my work.
Also, you might want to consider that RStudio is not officially supported through Anaconda, so if you are going to be using R regularly, you would be better off by using a stand alone installation instead of using Anaconda
Thank you for your suggestions! I in fact followed your advice and installed the CRAN RStudio distribution for Windows. And, as you guessed, I am no longer seeing the aforementioned problems.