[R-SIG-Mac] Loop when trying to run Rcmdr

[Kevin Ushey]

Hi José,

Did you by any chance update macOS on your machine recently? A guess
is that you might need to reinstall XQuartz after your update, then
restart (or log out and log in) to make sure the relevant XQuartz
login agents are running.

The output of launchctl print gui/$(id -u)/org.xquartz.startx from a
Terminal may also be helpful.

Similarly, the output of

Sys.getenv("DISPLAY")
library(tcltk)
library(tcltk2)
packageVersion("tcltk2")
packageVersion("Rcmdr")

from your RStudio session (including warnings, if any) would be useful too.

Best,
Kevin

On Tue, Nov 10, 2026 at 1:38 PM Jose G Conde Santiago via R-SIG-Mac
<r-sig-mac using r-project.org> wrote:
>
> Hello all.
>
> When I try to run Rcmdr within RStudio on my Mac, I get the following continuous stream of error messages (Session info at the bottom). This is the first time I see this behavior since I started working with Rcmdr years ago. I tried running Rcmdr directly from R, but R freezes. I recently upgraded to MacOS 27 Golden Gate. All I can tell is that there seems to be a problem with tcltk.
>
>
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: can't find package tile
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_clearlooks/pkgIndex.tcl: too many nested evaluations (infinite loop?)
> error reading package index file /Library/Frameworks/R.framework/Versions/4.6/Resources/library/tcltk2/tklibs/ttktheme_radiance/pkgIndex.tcl: too many nested evaluations (infinite loop?)
>
>
> sessionInfo()
>
> R version 4.6.2 (2026-10-29)
> Platform: aarch64-apple-darwin23
> Running under: macOS Golden Gate 27.2.1
>
> Matrix products: default
> BLAS:   /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
> LAPACK: /Library/Frameworks/R.framework/Versions/4.6/Resources/lib/libRlapack.dylib;  LAPACK version 3.12.1
>
> locale:
> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>
> time zone: America/Puerto_Rico
> tzcode source: internal
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> loaded via a namespace (and not attached):
> [1] compiler_4.6.2 tools_4.6.2
>
>
> Running the following:
>
>
>   *
> XQuartz 2.8.6
>   *
> RStudio 2026.10.1+239 "Blue Mistflower" Release (0b06695c24e10f6de6b9166c35ae24804c21f95f, 2026-10-23) for macOS,
>
> Thanks in advance for your assistance.
>
> José G. Conde, MD, MPH
> Professor
> Biomedical Sciences Graduate Program
> School of Medicine
> Medical Sciences Campus
> University of Puerto Rico
>
>         [[alternative HTML version deleted]]
>
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