Thank you, GIJOE.
I had updated it twice from modules administration, but the problem still existed.
At the bottom of PICO's module preferences page, there are some php warning:
Quote:
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_USE_WRAPSMODE in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_WRAPSAUTOREGIST in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_TOP_MESSAGE in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_MENUINMODULETOP in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_LISTASINDEX in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_SHOW_BREADCRUMBS in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_SHOW_PAGENAVI in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_SHOW_PRINTICON in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_SHOW_TELLAFRIEND in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_USE_TAFMODULE in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_FILTERS in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_USE_VOTE in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_GUESTVOTE_IVL in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_HTMLHEADER in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_CSS_URI in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_IMAGES_DIR in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_BODY_EDITOR in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_COM_DIRNAME in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121
Warning [PHP]: constant(): Couldn't find constant _MI_PICO_COM_FORUM_ID in file d:\apache\htdocs\xoops22\modules\system\admin\preferences\main.php line 121