Hi,

are your select sworking properly, if you look if firebug does it have the right id? Is this the only field with this storage on the form (another field e.g. default category field in article type would be overriding this value). Your storage sounds right

Hi Klas, 

Thanks for your reply. I saw that the category for the storage is 2 and this catid is "Not categorized". I have checked that this is the only fields in this form with this storage, thus I don't know what to do now with this error ...

Try deleting the field and create it again with the lock closed (inside form editor), set storage to Standard - Article and use >> to isert catid from existing columns list.