Pathogen does not work for me. I am following Adam Lowe\'s hints posted here (and few more) without any success...
My vimrc:
filetype off
call pathogen
I've had problems loading particular plugins: specifically, plugins with a plugin subdirectory. For example, on a fresh MacVim install, a plugin in ~/.vim/bundle/surround/plugin/surround.vim wasn't being loaded, even though ~/.vim/bundle/surround appeared in the output of :scriptnames.
The problem was that I was loading Pathogen in .gvimrc, not .vimrc. For whatever reason, stuff in .vim/bundle/*/plugin subdirectories won't load if you do that, so do it in .vimrc!
I've opened an issue on github—I don't know if it can be made to work even if it loads from .gvimrc, but there should at least be some sort of warning in the documentation for idiots like me.