NextCellent 1.9.31 update failed, database unavailable

Hi
I installed NextCellent Gallery 1.9.31 on WPMU and no problems there. When I was back on the site to start uploading pictures I got a message saying that the databases needed an upgrade and there was no way getting around thar.
The result was:
Upgrade NextCellent Gallery

Upgrading database…
Fatal error: Uncaught exception ‘Exception’ with message ‘Could not find NextCellent Gallery database tables, upgrade failed!’ in /home/styrso/public_html/wp/wp-content/plugins/nextcellent-gallery-nextgen-legacy/admin/upgrade.php:94 Stack trace: #0 /home/styrso/public_html/wp/wp-content/plugins/nextcellent-gallery-nextgen-legacy/admin/upgrade.php(142): ngg_upgrade() #1 /home/styrso/public_html/wp/wp-content/plugins/nextcellent-gallery-nextgen-legacy/admin/upgrade.php(109): doing_update_output(‘http://www.styr…’) #2 /home/styrso/public_html/wp/wp-content/plugins/nextcellent-gallery-nextgen-legacy/admin/class-ngg-admin-launcher.php(128): nggallery_upgrade_page() #3 /home/styrso/public_html/wp/wp-content/plugins/nextcellent-gallery-nextgen-legacy/admin/class-ngg-admin-launcher.php(148): NGG_Admin_Launcher->show_upgrade_page() #4 [internal function]: NGG_Admin_Launcher->show_menu(”) #5 /home/styrso/public_html/wp/wp-includes/plugin.php(525): call_user_func_array(Array, Array) #6 /home/styrso/public_html/wp/wp-admin/admin.p in /home/styrso/public_html/wp/wp-content/plugins/nextcellent-gallery-nextgen-legacy/admin/upgrade.php on line 94

line 94 in upgrade.php
throw new Exception( __( ‘Could not find NextCellent Gallery base tables, upgrade failed!’, ‘nggallery’ ) );

As far as I can see there are 3 dbs: wp_ngg_album, wp_ngg_gallery and wp_ngg_pictures

The gallery path is the default setting – wp-content/blogs.dir/%BLOG_ID%/files/

I have used NextCellent on another single webpage domain without any problems for about a year now.
Why doesn’t it work here?? All help would be very much appreciated!
styrso.nu/wp/bastu – very much under development