'Multiselect/Other' madness

I have a Multiselect/Other field showing gobbeldegook results:
a:11:{i:0;s:6:"AmDram";i:1;s:6:"Comedy";i:2;s:11:"Commercials";i:3;s:10:"Corporates";i:4;s:13:"Feature Films";i:5;s:11:"Short Films";i:6;s:13:"Improvisation";i:7;s:14:"Motion Capture";i:8;s:12:"Music Videos";i:9;s:18:"Rehearsed Readings";i:10;s:8:"Rolepla

The values are: AmDram, Comedy, Commercials, Corporates, Cruise, Dancing, Feature Films, Short Films, Improvisation, Modelling, Motion Capture, Musician, Music Videos, Panto, Photographic, Presenting, Radio, Rehearsed Readings, Roleplay, Stage, Television, Theatre, Touring, TIE, UK-only, Vocals, Voiceover

No odd chars or anything so I don’t know what the problem can be!

thanks, Em

https://www.ads-software.com/extend/plugins/participants-database/