PHP Version 5.2.17 & 5.3.4
WP 3.4.1 & 3.4.2
the problem is related to the response header change in the json answer.
disabling the line
[380] //header(“text/json”);
fixes the problem.
WP_DEBUG printed out:
<b>Warning</b>: Cannot modify header information – headers already sent by (output started at /wp-includes/functions.php:2758) in <b>/wp-content/plugins/simple-history/index.php</b> on line <b>380</b>
{“status”:”ok”,”error”:””,”items_li”:”<li class=’ simple-history-has- …
:::
thanks for your useful plugin