These issues originate in a change in how R looks for S3 methods, at
least on some of the CRAN machines. To reproduce locally, you currently
need to set the environnment variable
_R_S3_METHOD_LOOKUP_BASEENV_AFTER_GLOBALENV_=TRUE
See the source code at
https://svn.r-project.org/R/trunk/src/main/ob
My colleagues and I are preparing a new submission of a package for
CRAN (https://github.com/glmmTMB/glmmTMB/tree/master/glmmTMB). We've
tested it on all the platforms we have access to: Travis/Linux (devel
and release), MacOS (release), Ubuntu 16.04 (release), win-builder
(devel and release),
