Fixing a failed module install
Menu blocks doesn't alter the DB at all during the installation. It uses the 'block' and 'block_role' tables from drupal core and creates several entries in the 'variable' table to store some config.

So here's what I would do:


Check admin/reports/dblog 
Install the website locally with wamp or Acquia DEV Desktop (using
the import tab and backup migrate module) if you're on windows to do
some debugging.
Check the 'menu_block_admin_settings_form' function in
menu_block.admin.inc which is called when going to
admin/config/user-interface/menu-block