Running examples in 'colordistance-Ex.R' failed
The error most likely occurred in:

> ### Name: exportTree
> ### Title: Export a distance matrix as a tree object
> ### Aliases: exportTree
> 
> ### ** Examples
> 
> clusterList <- colordistance::getHistList(dir(system.file("extdata",
+ "Heliconius/", package="colordistance"), full.names=TRUE), lower=rep(0.8, 3),
+ upper=rep(1, 3))
Warning in colordistance::getHistList(dir(system.file("extdata", "Heliconius/",  :
  RGB and HSV are device-dependent, perceptually non-uniform color spaces. See 'Color spaces' vignette for more information.

Using 3^3 = 27 total bins

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  |======================================================================| 100%> CDM <- colordistance::getColorDistanceMatrix(clusterList, method="emd",
+ plotting=FALSE)
> 
> # Tree is both saved in current working directory and stored in
> # heliconius_tree variable
> heliconius_tree <- colordistance::exportTree(CDM,
+ "./HeliconiusColorTree.newick", return.tree=TRUE)
Error in library.dynam(lib, package, package.lib) : 
  DLL 'Rcpp' not found: maybe not installed for this architecture?
Calls: <Anonymous> ... namespaceImportFrom -> asNamespace -> loadNamespace -> library.dynam
Execution halted