[R] Where does ' Setting LC_CTYPE failed, using "C" ' come from? 2

[Christian]

Hi,

I am fighting to get rid of the messages like:

During startup - Warning messages:
Setting LC_CTYPE failed, using "C"
Setting LC_COLLATE failed, using "C"

This is annoying, because when building a package using R CMD, This 
message keeps cropping up.

Here my R:
Sys.getlocale()
[1] "C"
...................

Executing

     Open Terminal
     Write or paste in: defaults write org.R-project.R force.LANG 
en_US.UTF-8
     Close Terminal
     Start R

as suggested on the Net, did not help :-(

Pointers are welcome
C.

-- 
Christian Hoffmann
Rigiblickstrasse 15b
CH-8915 Hausen am Albis
Switzerland
Telefon +41-(0)44-7640853