Error in 7.6 !! but not in 7.5

Hi there,

for $x in (db:fulltext('work', 'string theory')/ancestor::*:Doc  except
db:fulltext('work', 'elastic')/ancestor::*:Doc)
return substring(data($x/Publish/PubDate/@d), 7)

I am storing Dates in YYYYMMDD Format as <PubDate d="20040608"> tag. The above query will return the Date of the Document published for the searched criteria. Using the BaseX 7.5, I was able to run the query correctly. But with 7.6, I am getting error *"Single item expected, ("20040608", "20040609") found"*

It looks as if a node in your data has several Publish or PubDate children; to confirm this, you could try the following queries.. a) db:open('work')//Doc/Publish[count(PubDate) > 1] b) db:open('work')//Doc[count(PubDate) > 1]/Publish As you are searching for string theory, I have some guess that it could also be related to the two-dimensionality of quantum states. Christian ;)