Hey,
i just updated from 1.6 to 1.6.4 and do experience some troubles since.
when i try to save a project (or just modifying existing ones) i get the following error:
Warning: json_encode() expects exactly 1 parameter, 2 given in /.../wp-content/themes/lay/gridder/category-gridder.php on line 269
Warning: Cannot modify header information - headers already sent by (output started at /.../wp-content/themes/lay/gridder/category-gridder.php:269) in /homepages/2/d304990522/htdocs/thomaskorf/wordpress/wp-includes/pluggable.php on line 1228