[R] Error with "compiler" and "caret" packages

[Bert Gunter]

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Cheers,
Bert
Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Wed, Jan 25, 2017 at 3:23 PM, Jeff Hughes <jeff.hughes at gmail.com> wrote:
> Hi there,
>
> I have been getting an irritating error when trying to use the "caret"
> package on one of my machines. Whenever I train any model whatsoever, it
> comes back with this error:
>
> Warning: namespace ‘compiler’ is not available and has been replaced
> by .GlobalEnv when processing object ‘sep’
> Error in comp(expr, env = envir, options = list(suppressUndefined = TRUE))
> :
>   could not find function "makeCenv"
>
> As a result, the model does not work, and I am unable to use the caret
> package. As an example, here is some code that causes the error, though it
> has happened in every case I have tried:
>
> library(caret)
> fit.knn <- train(Species ~ ., data=iris, method="knn")
>
> I have tried reinstalling the caret package; I have tried reinstalling R; I
> have tried updating all of my packages; nothing has worked. What's more,
> this machine is running Windows 10, and I have successfully run the same
> code on two other machines running the same version of Windows, the same
> version of R, and the same version of the caret package. I have also only
> run into it when using caret, but I don't think the error lies within that
> package itself.
>
> Here is my sessionInfo() after running the above code in a new R session:
>
> R version 3.3.2 (2016-10-31)
> Platform: x86_64-w64-mingw32/x64 (64-bit)
> Running under: Windows >= 8 x64 (build 9200)
>
> locale:
> [1] LC_COLLATE=English_United States.1252  LC_CTYPE=English_United
> States.1252    LC_MONETARY=English_United States.1252
> [4] LC_NUMERIC=C                           LC_TIME=English_United
> States.1252
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] caret_6.0-73    ggplot2_2.2.1   lattice_0.20-34
>
> loaded via a namespace (and not attached):
>  [1] Rcpp_0.12.8        magrittr_1.5       splines_3.3.2      MASS_7.3-45
>      munsell_0.4.3      colorspace_1.3-2
>  [7] foreach_1.4.3      minqa_1.2.4        stringr_1.1.0      car_2.1-4
>      plyr_1.8.4         tools_3.3.2
> [13] parallel_3.3.2     nnet_7.3-12        pbkrtest_0.4-6     grid_3.3.2
>       gtable_0.2.0       nlme_3.1-128
> [19] mgcv_1.8-16        quantreg_5.29      e1071_1.6-7        class_7.3-14
>       MatrixModels_0.4-1 iterators_1.0.8
> [25] lme4_1.1-12        lazyeval_0.2.0     assertthat_0.1     tibble_1.2
>       Matrix_1.2-7.1     nloptr_1.0.4
> [31] reshape2_1.4.2     ModelMetrics_1.1.0 codetools_0.2-15   stringi_1.1.2
>      scales_0.4.1       stats4_3.3.2
> [37] SparseM_1.74
>
> Note that the "compiler" package is not loaded for some reason, which I
> think it should be (the other machines on which this runs successfully have
> it loaded). But the compiler package is built-in, so I can't seem to find a
> way to load it manually.
>
> This one has really stumped me, and there are very few relevant hits on
> Google. Any help would be much appreciated!
>
> Jeff
>
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>
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