After creating a new survey and question group and question of type "radio button", I tried to enter the first answer option but got a database error: General error: 20018 Cannot insert the value NULL into column 'assessment_value', table 'LimeSurvey_temp.dbo.answers'; column does not allow nulls. INSERT fails. [20018] (severity 16) [(null)].
Insert statement as traced by SQL Server profiler:
INSERT INTO [dbo].[answers] ([qid], [code], [answer], [language], [sortorder], [scale_id]) VALUES (49, 'A1', '', 'nl', 0, 0)
No value specified for assessment_value, which is defined as NOT NULL in the database.