On one computer running R 2.15.2 I have installed packages from a .zip file (these packages happened to be ggplot2 and data.table, but I don't think the specific package is my issue.) Everything works fine. I took these packages to a computer without an internet connection and installed them. This other computer is running R 3.0.1. The packages seemed to install without a problem (using R's "install package(s) from local zip file" option). When I call the packages with the library(), I get the following error:
Error: package '<insert name of newly installed package here>' was build before 3.0.0: please-re-install it
Can anyone explain potential causes for this error to be thrown? Are there particular directories that the .zip packages must be in for a proper install? If R is installed on a separate partition from where the .zip packages were loaded, could this cause the error?
I'm at a loss, any pointers are greatly appreciated. This is a difficult one to reproduce; if you need any other version/system parameters to understand the problem, please don't hesitate to ask.