We’re trying to use the Content Query Web Part (CQWP) to aggregate document lists from several sites in a site collection. If we set the web part to “Show items from all sites in this site collection”, we get the following error in the web part display:
There is a problem with the query that this Web Part is issuing. Check the configuration of this Web Part and try again.
If we select a single list from one site in the site collection, the documents from that list are displayed correctly. But obviously, that's not very useful.
