For some reason, after deactivating your plugin to see why WP-Migrate-DB was not working I cannot seem to be able to reactivate it.
When I try to activate it I always get:
Plugin could not be activated because it triggered a fatal error.
Looking throught the log I can see this line referring to PHP:
PHP Fatal error: Call to undefined function scb_register_table() in D:\\...\\plugins\\posts-to-posts\\core\\storage.php on line 11