All the plugins are installed and activated successfully, however whenever I go to MetaBox in the menu, I only have 2 options, Dashboard and Licence. The documentation states that the Relationships tab should be under the main menu.
Many thanks for this! I was able to create bi-directional relationships using only the code. The relationship section however I have the following error being thrown:
Warning: Parameter 2 to RWMB_Post_Field::search_by_title() expected to be a reference, value given in C:\path\class-wp-hook.php on line 303
Call Stack
# Time Memory Function Location
1 0.0001 413488 {main}( ) ...\post.php:0
2 0.2734 13921328 require( 'C:\path\wp-admin\edit-form-advanced.php' ) ...\post.php:206
3 0.3613 14678792 do_meta_boxes( ) ...\edit-form-advanced.php:681
4 0.3681 14692504 RW_Meta_Box->show( ) ...\template.php:1395
5 0.3691 14694200 RWMB_Field::call( ) ...\meta-box.php:259
6 0.3691 14694640 RWMB_Object_Choice_Field::show( ) ...\field.php:580
7 0.3696 14695736 RWMB_Field::call( ) ...\object-choice.php:28
8 0.3696 14696176 RWMB_Post_Field::query( ) ...\field.php:580
9 0.3697 14699296 WP_Query->__construct( ) ...\post.php:155
10 0.3697 14699296 WP_Query->query( ) ...\class-wp-query.php:3576
11 0.3697 14699296 WP_Query->get_posts( ) ...\class-wp-query.php:3465
12 0.3699 14703168 apply_filters_ref_array( ) ...\class-wp-query.php:2131
13 0.3699 14703168 WP_Hook->apply_filters( )
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