Trying to change logo

[mcburnia]

Hi, newbie here.

I'm trying to change the standard userspice logo to my own logo and have followed the instructions (the only ones I could find) for US4.3 or earlier and having copied my own logo to /users/images/logo.png.

I have also tried changing the line:  

<a class="" href="<?=$us_url_root?>"><img class="img-responsive" src="<?=$us_url_root?>users/images/logo.png" alt="" /></a>
to
<a class="" href="<?=$us_url_root?>"><img class="img-responsive" src="<?=$us_url_root?>images/logo_v6.png" alt="" /></a>

But still the UserSpice logo prevails!

Any ideas as to what I am doing wrong?

cheers
Andi