Is there any quick and easy way to fix the IE8 issue? It only displays the header and then the error says:
HTML Parsing Error: Unable to modify the parent container element before the child element is closed (KB927917)

Any help would be much appreciated.

Open header.php

You will see something like this

  <div class="column span-6 last">
    Logo And Navigation
  </div>
 
  <div class="column span-12 banner">
    Banner
  </div>
 
  <div class="column span-6 last" id="twitter">
    twitter stuff
  </div>

We need more space for the extra pages, so you’ll need to steal it from the banner section.
Logo and navigation 6 units
Banner 12 units
Twitter stuff 6 unit
Total 24 units

The New Grid

  <div class="column span-8 last">
    Logo And Navigation
  </div>
 
  <div class="column span-10 banner">
    Banner
  </div>
 
  <div class="column span-6 last" id="twitter">
    twitter stuff
  </div>

And finally we need to tell Wordpress what pages to include. Find this lines:

wp_list_pages("include=$blogpage,$folio,$contact&sort_column=menu_order&link_after=//&title_li=&depth=1"); }

To include only certain Pages in the list use the Page ID number, for instance 45,52

wp_list_pages("include=$blogpage,$folio,$contact,45,52&sort_column=menu_order&link_after=//&title_li=&depth=1"); }

Or maybe your forgot to set your Portfolio category at Space Fholio CP (under Appearance)