RStudio won't start up - [rdesktop] ERROR system error 60 (Operation timed out) OCCURRED AT

Yup, Rstudio doesn't work for me either upon install.

RStudio Edition: RStudio Desktop
RStudio Version: 1.1.453
OS Version: MacOS High Sierra 10.13.4
R Version: R 3.4.4 GUI 1.70 El Capitan build

I also posted about it here and got no responses that could help me: R Studio Desktop Won't Start on macOSX High Sierra

Similar to you, RStudio works in safe mode, and I am able to ping localhost and in normal boot mode.

And does R work by itself?

I think R works by itself because it opens fine, but as a first time user I haven't tried any scripts.

I get this error message from a diagnostic run attempt:

[rdesktop] ERROR system error 60 (Operation timed out); OCCURRED AT: rstudio::core::Error rstudio::core::waitWithTimeout(const boost::function<WaitResult ()> &, int, int, int) /Users/rstudio/rstudio/src/cpp/core/WaitUtils.cpp:63