Quoting original submitter: " It seems that the fancy plugin is using a private function that has been removed in the last (1.6) upload. More information: https://bugs.webkit.org/show_bug.cgi?id=62512 " regards,
Adapt the solution used in midori to overcome the exact same problem. http://git.xfce.org/apps/midori/commit/?id=648d869e4ff69f121da97484a0fd553b005ca751
*** This bug has been marked as a duplicate of bug 2507 ***