Wordpress Settings API two sections same page save error - wordpress

Question

Hi I am just learning to work with the settings API and I cant seem to get to sections on the same page to work.The first section works perfetly and saves the daya but the second displays an error on save :
Options Page not Found
This is the code for my entire options page:
<?php
/* ------------------------------------------------------------------------ *
* REGISTER MENU AND SUBMENU
* ------------------------------------------------------------------------ */
function thanathos_theme_menu()
{
add_menu_page('Thanathos',
'Thanathos',
'administrator',
'thanathos_menu_id',
'thanathos_display'
);
}
add_action('admin_menu', 'thanathos_theme_menu');
/*------------------------------------------------------------------------ *
* Social & Logo Options
* ------------------------------------------------------------------------ */
function thanathos_initialize_frontpage_options()
{
if (false == get_option('thanathos_front_page_options')) {
add_option('thanathos_front_page_options');
}
add_settings_section(
'thanathos_front_page',
'',
'thanathos_front_page_section_callback',
'thanathos_front_page_options'
);
add_settings_field(
'logo_path',
'Logo Path',
'thanathos_logo_path_url_callback',
'thanathos_front_page_options',
'thanathos_front_page'
);
register_setting(
'thanathos_front_page_options',
'thanathos_front_page_options',
'thanathos_front_page_options_sanitize'
);
}
add_action('admin_init', 'thanathos_initialize_frontpage_options');
function thanathos_front_page_section_callback()
{
}
function thanathos_logo_path_url_callback()
{
$options = get_option('thanathos_front_page_options');
echo '<input type="text" id="logo" name="thanathos_front_page_options[logo_path]" value="' . $options['logo_path'] . '" />';
}
function thanathos_front_page_options_sanitize($input)
{
$output = array();
foreach ($input as $key => $val) {
if (isset($input[$key])) {
$output[$key] = strip_tags(stripslashes($input[$key]));
}
}
return apply_filters('thanathos_front_page_options', $output, $input);
}
/* ------------------------------------------------------------------------ *
* Slider Options
* ------------------------------------------------------------------------ */
function thanathos_front_page_slider_options()
{
if (false == get_option('thanathos_front_page_slider')) {
add_option('thanathos_front_page_slider');
}
add_settings_section('thanathos_front_page_slider',
'',
'thanathos_front_page_slider_callback',
'thanathos_display',
'thanathos_front_page_slider'
);
}
add_action('admin_init', 'thanathos_front_page_slider_options');
function thanathos_front_page_slider_callback()
{
}
/* ------------------------------------------------------------------------ *
* Display on Thanathos Menu Page
* ------------------------------------------------------------------------ */
function thanathos_display()
{
?>
<style>
fieldset {
border: 1px solid #ddd;
margin-top: 20px;
padding-bottom: 20px;
}
legend {
margin-left: 5px;
padding: 0 5px;
color: #2481C6;
text-transform: uppercase;
}
p.submit {
margin-left: 10px;
}
td input {
width: 360px;
}
</style>
<div class="wrap">
<div id="icon-themes" class="icon32"></div>
<h2>Thanathos General Options</h2>
<?php settings_errors(); ?>
<form method="post" action="options.php">
<fieldset>
<legend><strong>Logo and Social Options</strong></legend>
<?php
settings_fields('thanathos_front_page_options');
do_settings_sections('thanathos_front_page_options');
?>
</fieldset>
<?php submit_button(); ?>
</form>
<form method="post" action="options.php">
<fieldset>
<legend><strong>Slider Options</strong></legend>
<?php
settings_fields('thanathos_front_page_slider');
do_settings_sections('thanathos_front_page_slider');
?>
</fieldset>
<?php submit_button(); ?>
</form>
</div>
<?php
}
?>
If this is not the corect approch of adding two sections to the same page then what is?

Answer 1

Below is an excellent tutorial for the settings api. Altough a bit long if you want to do it as a whole.
In part 5 it explains why you can't have 2 settings_sections on one page.
The solution: use tabs.
This will help you with your problem.
http://wp.tutsplus.com/tutorials/the-complete-guide-to-the-wordpress-settings-api-part-1/