Reply To: 500 Error after Checking Boxes in All in One Tab

I have what may be the same issue. Only purchased today and testing on local server.

The only difference is that I first only installed a few and then did not install any of the premium plugins except AIO.

Fatal error: Cannot redeclare mb_cpt_load() (previously declared in C:\Users\Name\Documents\Websites\www.site.dev.cc\wp-content\plugins\mb-custom-post-type\mb-custom-post-type.php:30) in C:\Users\Name\Documents\Websites\www.site.dev.cc\wp-content\plugins\meta-box-aio\extensions\mb-custom-post-type\mb-custom-post-type.php on line 71

MB_AIO_Loader->load_premium_extensions( ) ...\class-wp-hook.php:286