> On Jan 12, 2020, at 7:51 AM, Federico Calboli <federico.calb...@kuleuven.be> 
> wrote:
> 
> Hi All,
> 
> just to check whether I am the only one (or one of the lucky few) who 
> randomly get the message (I posted it before but we did not seem to find a 
> solution then):
> 
> 2020-01-12 14:45:19.462 R[4163:3012268] Failed to connect (separatorView) 
> outlet from (NSView) to (NSTitlebarSeparatorView): missing setter or instance 
> variable
> 
> on opening R-app.
> 
> sessionInfo()
> R version 3.6.2 (2019-12-12)
> Platform: x86_64-apple-darwin15.6.0 (64-bit)
> Running under: macOS Mojave 10.14.6
> 
> Matrix products: default
> BLAS:   
> /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRblas.0.dylib
> LAPACK: 
> /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRlapack.dylib
> 
> locale:
> [1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8
> 
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base     
> 
> loaded via a namespace (and not attached):
> [1] compiler_3.6.2
> 
> 
> It is harmless but offends my retentive nature — is there a permanent fix?
> 
> Cheers
> 
> F


Hi,

Based upon a reply by Simon to your query last April:

  https://stat.ethz.ch/pipermail/r-sig-mac/2019-April/012972.html

while I do not have a definite response, you might try the following:

1. Check your ~/.Rprofile to see what if any settings or packages are defined 
at startup. You might rename the file to something else so that it does not get 
used, and see if the message persists. If not, then there may be something in 
that file that you may need to identify through trial and error.

2. Re-install XQuartz, which should done after each R update, to see if there 
is something related to that.

3. You might consider fully deleting R, all installed packages and R.app, and 
doing a clean install. The issue you had last April was with 3.6.0, so it is 
possible that something was corrupted and persists with 3.6.2. A prior post 
from you in March of last year with the same issue was with 3.5.3, so whatever 
was happening goes back a bit.


Not sure if that will get you anywhere, or are perhaps things that you have 
already tried, but some initial thoughts.

Regards,

Marc Schwartz

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