I've been having some problems installing the 'survival' package in R. I have tried almost everything including trying to build from source, and I'm getting this same error.
>>install.package('survival')
Error in library.dynam(lib, package, package.lib)
shared object ‘Matrix.so’ not found
ERROR: lazy loading failed for package ‘survival’
* removing ‘/home/dave/R/x86_64-pc-linux-gnu-library/3.4/survival’
my distro--
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial