Does the MBD get installed with BLS?

No, it doesn’t.

The Master Bowler Database (MBD) is not included with the main BLS installation. That’s because some users don’t need or use the MBD, so we made it a separate install.

If you want to use the MBD, you’ll need to download and install it separately. Once installed, it works alongside BLS, but it doesn’t come with it by default.