Having PP.o and PP.so will break things if (as I suspect) they are
from a different architecture. Your colleague's testing should have
picked that up (R CMD check will warn you) but you can try deleting
them.
Also, I think you have ignored all the comments about not installing R
into a path
Hi r-devers,
This is the first time I've tried to install a package from source on
Windows, so please bear with me. I'm trying to install a package written
(and tested) by a colleague in C for R on linux, and I am trying to
install it on windows following the directions here -
http://cran.r-proje