Hi
Thank you very much for your advice.
I could not run the diagnostics even though I run
C:\Program Files\RStudio\bin\Run Diagnostics.lnk.
it just hangs!
I could not find the cause of the problem, however, I manage to get rstudio working after going through the following steps.
- uninstall R
- uninstall rstudio.
- use Regedit to delete all entries for rstudio and R
- reboot
- reinstall r
- reinstall rstudio
rstudio 1.2.5001 is work now.
perhaps the problem is some old registry links are not cleared.
Thank you.