[R-SIG-Mac] Can't open files in 4.0 or 4.01

[Carl Witthoft]

Hi,
2 weeks ago I installed R 4.0 on my new Catalina machine. Things seemed 
to be working fine.
Today I installed R 4.01, and now I can't open any FILE.r - no matter 
what way I try, i.e. double-click the file, drag/drop, or open from the 
R GUI menu,  R hangs with the beachball.
I tried giving R full disk access and other privileges via Security 
settings; no help.

So I deleted R 4.01 and reinstalled R 4.0, and dang if I no longer can 
open files any more!  I've tried all the suggestions in the previous 
thread in this mailing group; no help.

What else can I do, or delete, or uninstall, to at least get back to 
where I was? Right now I'm basically DIW.
-- 
Carl Witthoft
carl using witthoft.com
resume: https://app.box.com/file/498153801347