I have a simple example to illustrate my problem here.
[SEE UPDATED LINK BELOW/]
It's just one page, home.php.
The home page has a list of images that are made into a slideshow.
From Settings > Reading > Front page display, I have selected the home page as the Front page.
The home page loads but without the slideshow.
If I click 'Home' to reload the home page the slideshow appears.
Why does the slideshow not appear when the page opens.