[R-SIG-Mac] Rcmdr start-up issue

[Robert Baer]

I seem to be having a problem starting Rcmdr:

> library(Rcmdr)
Loading required package: splines
Loading required package: RcmdrMisc
Loading required package: car
Loading required package: sandwich
Loading required package: effects
Loading required package: carData

Attaching package: ‘carData’

The following objects are masked from ‘package:car’:

    Guyer, UN, Vocab

lattice theme set by effectsTheme()
See ?effectsTheme for details.
Error: package or namespace load failed for ‘Rcmdr’:
 package ‘tcltk’ does not have a namespace
> 

I tried first from within RStudio, then from R itself. Same outcome. Reinstalling Rcmdr, tcltk or tcltk2 package did not seem to help. 

I’m brand new to mac, so I may be missing something basic.  On the other hand I should confess to just having just “updated” Xcode.  

> R.Version()
$platform
[1] "x86_64-apple-darwin15.6.0"

$arch
[1] "x86_64"

$os
[1] "darwin15.6.0"

$system
[1] "x86_64, darwin15.6.0"

$status
[1] ""

$major
[1] "3"

$minor
[1] "4.1"

$year
[1] "2017"

$month
[1] "06"

$day
[1] "30"

$`svn rev`
[1] "72865"

$language
[1] "R"

$version.string
[1] "R version 3.4.1 (2017-06-30)"

$nickname
[1] "Single Candle"


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