Since I've installed <a href="http://www.vim.org/scripts/script.php?script_id=3883">this</a> VIM autosession manager (which does its job) syntax highlighting gets killed on the first buffer change after starting vim. I can restore it with 
>:syntax on

but I would prefer not to have to. Maybe there is something in _~/.vim/after_ I could set?

Side question: I use VIM bundle; is it still _~/.vim/after_ ?

(I don't know if this matters: All I ever need syntax highlighting for are tex and lilypond files)

thanks