Just downloaded this template pack (zc1.5 version) and commenced work for a new client.

For anyone having problems to get the search button (in the header) aligned with the search box please note that there is an inconsistency between the stylesheet and line 19 in includes/templates/an_upscale_boutique/sideboxes/tpl_search_header.php

in the css look for

.search-header-button {vertical-align:middle;}
and in includes/templates/an_upscale_boutique/sideboxes/tpl_search_header.php around line 19 look for

class="header-search-button"
and change to

class="search-header-button"
to match the directive in the css

upload the changed file and bingo, the button lines up with the search box.