If I click twice on "search" in the search dialogue I get an error "Only resources can modify remote identifiers".
I confirm it. But for me it's akonadi problem
Same problem KDE 4.8.5 - Mageia 2
See bug 282891.
This bug has only been reported for versions older than KDEPIM 4.14 (at most akonadi-1.3). Can anyone tell if this bug still present? If noone confirms this bug for a recent version of akonadi (part of KDE Applications 15.08 or later), it gets closed in about three months.
Just as announced in my last comment, I close this bug. If you encounter it again in a recent version (at least 5.0 aka 15.08), please open a new one unless it already exists. Thank you for all your input.