I wanted to use mb settings page plugin in my custom plugin using class-tgm-plugin-activation class, but i cannot make it work together. "mb_settings_pages" hook is not accessible in the plugin.
Metabox group which is inlcuded the same way works without problems.
Here is the code:
When do you call this statement add_filter( 'mb_settings_pages', 'prefix_options_page' );? Do you call it directly from the main plugin's file?
The filter mb_settings_pages must be called before admin_menu action, which is used to add admin menu. That action fires quite early, before admin_init, so if you call it inside a hook, it might not work as expected.