Hi,

We have Lucene installed, but about a week ago the search function stopped bringing back a complete set of results.  For instance, where a particular search term ("Berlin") used to bring back about 3 pages of results, the same search term is now only delivering 1 result page with three items on it.

The error log in the database has this entry that I think may be related:

[UmbracoExamine] Field "DertIndexSet" is listed multiple times in the index set "title". Please ensure all names are unique

This chap encountered a similar problem:

http://our.umbraco.org/forum/ourumb-dev-forum/bugs/13364-Field-email-is-listed-multiple-times-in-the-index-set-InternalMemberIndexSet

We have tried to force a rebuild of the search a few times by:

- republishing all the home page node

- calling the ExamineManager.Instance.RebuildIndex() method in code

- deleting the files from 'Index' and 'Queue' folders and rebuilding these using both of the above steps.

Would anyone be able to shed any light on this, or let me know where we are going wrong?

Thanks!