2
If you're unable to access the admin page, you can change that setting in the database:
Look for the row in the xoops_config table with conf_modid = 0 and conf_name = "startpage", and change conf_value to "" (empty string) or "--".
The actual redirection is done in index.php, so another solution would be to temporarily hack that file:
//check if start page is defined
if ([color=ff0000]false &&[/color] isset($xoopsConfig['startpage']) && $xoopsConfig['startpage'] != "" && $xoopsConfig['startpage'] != "--" ) {
header('Location: '.XOOPS_URL.'/modules/'.$xoopsConfig['startpage'].'/');
exit();
} else {
$xoopsOption['show_cblock'] =1;
include "header.php";
include "footer.php";
}