Since easytag worked for some time and it doesn't anymore (the above crash is reproducible with different albums, .mp3, .ogg, .flac alike) i experimented a little and found out that it doesn't happen anymore, when i delete my ~/.easytag directory.
I have a backup of the problematic ~/.easytag. If it is needed/wanted I might post it here or send it to you.
Since easytag worked for some time and it doesn't anymore (the above crash is reproducible with different albums, .mp3, .ogg, .flac alike) i experimented a little and found out that it doesn't happen anymore, when i delete my ~/.easytag directory.
I have a backup of the problematic ~/.easytag. If it is needed/wanted I might post it here or send it to you.