[Plugin: GigPress] Can't add new artist

Have recently updated Gigpress and wordpress to latest versions.
Since then I can’t enter new gigs.
And all of my former artists have disappeared! It says I have no artists in the database.

Seems to be something wrong with artist_alpha?

I get this result:

WordPress database error: [Unknown column ‘artist_alpha’ in ‘field list’]
INSERT INTO wp_fredrikmalmberg_se_gigpress_artists (artist_name,artist_alpha, artist_url) VALUES (‘Eric Ericssons Kammark?r’, ‘eric ericssons kammark?r’,’www.eekk.se’)

WordPress database error: [Unknown column ‘show_external_url’ in ‘field list’]
INSERT INTO wp_fredrikmalmberg_se_gigpress_shows (show_date,show_time,show_expire, show_multi,show_price,show_tix_url, show_tix_phone,show_external_url, show_ages,show_notes,show_status, show_venue_id,show_tour_id,show_related) VALUES (‘2012-10-10′,’20:45:00’, ‘2012-10-10’,0,”,”,”,”, ‘Not sure’,’fd’,’active’,1,0,0)

Please tell me what to do.

https://www.ads-software.com/extend/plugins/gigpress/