The problem has been solved after the system update carried out on July 6, 2017. This application is now back to normal in the Windows environment.
We apologize to users for any inconveniences this may have caused you.
There have been reports that the R and RStudio graphical facilities are inoperable when in the Windows environment.
We have determined that this was caused by issues with the library settings that occurred when a system update was carried out on June 8 to upgrade R (from version 3.3.3 to 3.4.0).
As another system upgrade is required to solve this issue, we kindly ask all users to use R in the Mac environment until the next system update is carried out.
We apologize for any inconvenience this may have caused.