Common Issues - VundleVim/Vundle.vim GitHub Wiki
Common Vundle issues and their solutions
E492: Not an editor command: ^M
Check your git EOL setting, it might be changing them;
git config --global core.autocrlf input
or:
:set fileformat=unix :w
E117: Unknown function: vundle#begin
Verify the directory you installed Vundle actually exists (e.g. bundle/vundle.vim)
Check :scriptnames to see which directory Vundle is loading from (or if loading at all)
Check that you have pulled the latest version of Vundle