[R] problem with caretNWS on linux

[Peter Tait]

Hi,
I am using caretNWS on a RHEL x86_64 system and I am getting an error 
message that is nearly identical to the one occuring in
http://www.r-project.org/nosvn/R.check/r-release-macosx-ix86/caretNWS-00check.txt

Error in socketConnection(serverHost, port = port, open = "a+b", blocking = 
TRUE) :
  unable to open connection
Calls: system.time ... .local -> tryCatch -> tryCatchList -> 
socketConnection
In addition: Warning message:
In socketConnection(serverHost, port = port, open = "a+b", blocking = TRUE) 
:
  penguin:8765 cannot be opened

The software versions I am using are the following:
Python 2.3.4
twistd (the Twisted daemon) 1.3.0rc1
nwsserver-1.5.2
R version 2.6.2 (2008-02-08)
nws 1.6.3

Thank you for the help.
Peter