Backlinks to DefaultPreferences in System Web (Search all webs)

Could not perform search. Error was: Unmatched [ in regex; marked by <-- HERE in m/([ <-- HERE "{<=&`%^'?|#}>~\])/ at /sites/rockbox.org/foswiki/lib/Foswiki/Render.pm line 991. at /sites/rockbox.org/foswiki/lib/Foswiki/Render.pm line 991. Foswiki::Render::_escape('SvenDowideit') called at /sites/rockbox.org/foswiki/lib/Foswiki/Render.pm line 975 Foswiki::Render::_mailLink('Foswiki::Render=HASH(0xa3c7480)', '') called at /sites/rockbox.org/foswiki/lib/Foswiki/Render.pm line 1529 Foswiki::Render::TML2PlainText('Foswiki::Render=HASH(0xa3c7480)', '---+!! FamFamFamContrib\x{a}