What I've been trying to achieve is exactly described in the thread link I had posted, so it's
For the first time ever tried the trick with Bookmarking all of my Owned movies, then using the Filters I choose: Bookmarked and I can view all of my own DVDs,
then back to the issue of getting the actual statistics... the same error appears on my screen.
I think what nostra is asking you for is, what exactly is the Advanced search query that is causing the error? Please attach a screen shot of the search dialog.
Advance search should work properly, but you could use a different technique for selecting records (for any purpose)...Select all the records in one group and bookmark them, then filter by bookmarks.