Rstudio不会在图表面板中显示图形

Question

更新R后， Rstudio不会在图表面板中显示图形，而是在＆＃34; R图形：设备2（ACTIVE）＆＃34; 。

此后我认为R.version和RStudio.Version（）是最新的。

R.version

platform       i386-w64-mingw32            
arch           i386                        
os             mingw32                     
system         i386, mingw32               
status                                     
major          3                           
minor          4.0                         
year           2017                        
month          04                          
day            21                          
svn rev        72570                       
language       R                           
version.string R version 3.4.0 (2017-04-21) 

RStudio.Version（）

$citation

To cite RStudio in publications use:

  RStudio Team (2015). RStudio: Integrated Development for R. RStudio, Inc.,
  Boston, MA URL http://www.rstudio.com/.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {RStudio: Integrated Development Environment for R},
    author = {{RStudio Team}},
    organization = {RStudio, Inc.},
    address = {Boston, MA},
    year = {2015},
    url = {http://www.rstudio.com/},
  }


$mode
[1] "desktop"

$version
[1] ‘0.99.902’