I've run into an incompatibility with the wp-footnotes plugin that for every search gives the error:
Warning: array_key_exists() [function.array-key-exists]: The first argument should be either a string or an integer in /path/to/directory/footnotes.php on line 167
It's the same issue mentioned here: http://wordpress.org/support/topic/plugin-relevanssi-a-better-search-relevanssi-and-wp-footnotes?replies=3
But I don't understand the solution. Can anyone help, please?