package ‘gurobi’ was installed by an R version with different internals

[Marc Ouwerkerk]

Hi All,

I had to reinstall R and RSTudio on Windows 10 after a crash. However when installing gurobi again I receive the following error when loading the library:

library("gurobi")

Error: package or namespace load failed for ‘gurobi’:

 package ‘gurobi’ was installed by an R version with different internals; it needs to be reinstalled for use with this R version

This happens for both Gurobi 7.5.2 and 8.0.0.

THis is my setup:

> R.version

               _                           

platform       x86_64-w64-mingw32          

arch           x86_64                      

os             mingw32                     

system         x86_64, mingw32             

status                                     

major          3                           

minor          5.0                         

year           2018                        

month          04                          

day            23                          

svn rev        74626                       

language       R                           

version.string R version 3.5.0 (2018-04-23)

nickname       Joy in Playing              

> RStudio.Version()

$`citation`

To cite RStudio in publications use:

  RStudio Team (2016). RStudio: Integrated Development for R. RStudio, Inc., Boston, MA URL http://www.rstudio.com/.

A BibTeX entry for LaTeX users is

  @Manual{,

    title = {RStudio: Integrated Development Environment for R},

    author = {{RStudio Team}},

    organization = {RStudio, Inc.},

    address = {Boston, MA},

    year = {2016},

    url = {http://www.rstudio.com/},

  }

$`mode`

[1] "desktop"

$version

[1] ‘1.1.447’

Any ideas?

[LucaIn]

Hi,

I am facing the same error after updating R to the version 3.5.0.

It works fine using R version 3.4.4 (2018-03-15) -- "Someone to Lean On".

Anyone knows how can this problem can be fixed?