* installing *source* package ‘MultiDockRank’ ... ** using staged installation ** R ** byte-compile and prepare package for lazy loading Error: object ‘choose.files’ is not exported by 'namespace:utils' Execution halted ERROR: lazy loading failed for package ‘MultiDockRank’ * removing ‘/srv/hornik/tmp/CRAN/MultiDockRank.Rcheck/MultiDockRank’