Hi, 

I'm trying to use the set of functions from the tutorial:

https://www.bioconductor.org/packages/3.7/bioc/vignettes/ensembldb/inst/doc/coordinate-mapping.html#3_mapping_genomic_coordinates_to_protein-relative_coordinates

Unfortunately, the ensembld package doesn't seem to include those functions. 

I've also tried

"ensembldb::proteinToGenome"

with no success.

I've noticed the error massage "package 'ensembldb' is not available (for R version 3.4.4)" when I enter:

"install.packages("ensembldb")".

The functions aren’t available even when I enter:

source("https://bioconductor.org/biocLite.R")

biocLite("ensembldb")"

Is it a bug?

Thank you for your assistance!

The function you are looking for is new, having been added to the ensembldb package after last year's release, and thus not part of the release version of ensembldb (which you should apparently know since you are looking at the vignette for the devel version).

You cannot install the devel version of any Bioconductor package using R-3.4.4, which will automatically install release versions. If you want to use new functions that are part of the devel branch you need to use R-devel.