I have a code base that houses all of the column, content types, template, and list instance definitions. Am using the Update functionlaity a lot from version to version. Has been working well to this point.
I just added two new columns (fields), one a Lookup and the other a Multi-Lookup. The fields are added fine on the update, columns look correct and the content type to which these were added also look fine. I can create a new List instance from the content
type, and the new lookup columns are fine. The problem is this. Any existing list instances that were created from this same content type, now blow up when I try and access list items via the SP GUI. Something about a valid GUID, I dont't have the exect
error anymore, but will repost it when I recreate the issue for the tenth time.
I tried deleting the new lookup fields from this new list instance, thinking that I might be able to re-add them to fix the problem, but I get a new stack trace when I try and re-add them. Any hints on where I can start digging would be appreciated. I think
I'll start with comparing the list instance schemas between an existing list and a newly created one.
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