when i type some words, Rstudio repeated popping up "saving error"

Crash Information:

I have encountered some problems:

  1. when I type one or two words, Rstudio will keep popping up "save file" error with garbled message (

    ), and I have to keep closing the window. I can't type codes fluently everytime.

  2. when I changed my R script and try to save the file, my Rstudio will keep popping up "file changed error". No matter I click "yes" or "no", it would repeat showing "save file error" . Furthermore, the two windows will repeat showing and i can't closed or do anything with my Rstudio. The only one solution is to forced shutdown Rstudio.

  3. I had tried to install R and Rstudio several times (more than 6 times), however, the errors keeps showing.

Description of crash -

Steps to reproduce -

System Information:

  • RStudio Edition: (Desktop or Server) Desktop
  • RStudio Version: 1.2.1335
  • OS Version:
  • R Version: 3.6.1
  • Your sessionInfo():

Crash Report:

Also:

  • RStudio diagnostics report:
  • RStudio application log files:

From Troubleshooting Guide: RStudio Crashed

Do you run your project on a cloud-storage, e.g. Dropbox?
I also have some frequent errror-messages when running a project on a dropbox folder - it helps to switch off synchronization.
Dropbox and RStudio seem to confuse each other when files are new or changed.