I have solved that issue by changing one simple line in the smooth-slider.php file.
In line 609 (in my HTML editor or 305) I made the minor change from
<input type=”checkbox” class=”sldr_post” name=”slider” value=”slider” <?php echo $extra;?> />
to
<input type=”checkbox” class=”sldr_post” name=”slider” value=”slider” checked=”checked” />
This line is in <div id=”slider_checkbox”>.
The changes I made, causes to create all new posts and PAGES to be included in smooth slider.
