Mazuwa on midi packs require latest version

1. I would say inside EZD2 go to MENU > "Check for updates". The result should be a list of necessary updates.
2. You can go to MENU > "About EZDrummer". Here all version numbers of EZD2, EZX and MIDI libraries are listed in categories.
3. Login to your account and klick on MY PRODUCTS,. There is a tab "UPDATES". Download the latest MIDI files from here, unzip and install them.
4. If all this doesn't help maybe your library is defect. Then you should try MENU > "Advanced" > "Restore factory MIDI database" to repair the MIDI database. If this also does not help, for hardcore users, you can try to build up the new MIDI database if you delete what is inside the folder C:\Users\>>your_username<<\AppData\Roaming\Toontrack\EZdrummer\ .To eliminate issues sometimes a reinstallation of EZD2 and the MIDI files also can help. Do not delete the EZX libraries (waste of time)!