WordPress MU

I have a question concerning the function add_menu_page(page_title, menu_title, access_level/capability, file, [function], [icon_url]); .

Well it seems that the function doesn't work without the [function] parameter, which should be variable.

When you just want to include a option page like :

add_options_page('MyPlugin', 'MyPluginSettings', 10, 'wp-myplugin/myplugin-options.php') ;

it returns the following link in the admin:

http://mydomain.com/wp-admin/wp-myplugin/myplugin-options.php

which should return:

http://mydomain.com/wp-admin/options-general.php?page=wp-myplugin/myplugin-options.php

Can you guys help me, there are a lot of plugins which use the method of including an option file rather than calling a function. Which simply means that I would/must re-program all plugins....

There is a misprint in /wp-admin/menu-header.php, line 134:

if ( ( ('index.php' != $sub_item[2]) && ( file_exists(WP_PLUGIN_DIR . "/$menu_file") || file_exists( WPMU_PLUGIN_DIR . "/$menu_file") ) ) || ! empty($menu_hook) ) {

It should be $sub_file instead of $menu_file:

if ( ( ('index.php' != $sub_item[2]) && ( file_exists(WP_PLUGIN_DIR . "/$sub_file") || file_exists( WPMU_PLUGIN_DIR . "/$sub_file") ) ) || ! empty($menu_hook) ) {

Thnx @SergeyBiryukov!

Can I adjust the code without any consequences? And must/can we report this as a bug?

I did :) http://trac.mu.wordpress.org/ticket/1044

I added your fix and it seems to work! I want to thank you again, for your quick response!