Nextgen gallery & multisite – update database

Hi everybody,

I’m on the way to create my first WP multisite and like to use the Nextgen Gallery. Installation is no problem and the plugin works fine on my main site. But when I try to use the gallery in a sub site the plugin tells me that I have to update my database. So I click on ‘Update database’ and the plugin tells me that the update was successfully. But the message appears again and again and again.

Does anyone has an idea what I can do?

Greetings from Germany,
Raisis