Re : Top bar is invisible
The neat theme redefines the top bar. there is a templates/styles/neat/tiki-top_bar.tpl that overwrites the default templates/tiki-top_bar.tpl.
So if you change templates/tiki-top_bar.tpl, your change will never be seen in the neat theme
FOr moreneat , check if the top bar is redeined too? in standard no but .... Look at templates/styles/moreneat.css to see in the top_bar is included
sylvie