Hi
You can ignore my email (just sent) as I’m back able to use the forum again 🙂
This problem is easy. It’s described in the upgrade instructions for the previous upgrade (3.3.0) . You are corect that it relates to your historical events files. They are stored in /data/.
In those (and any other custom files) you need to do the following:
In each file near the top, just below the copyright statement, look for a block of code like
if (!defined('WT_WEBTREES')) {
header('HTTP/1.0 403 Forbidden');
exit;
}
Simply change “WT_WEBTREES” to “WT_KIWITREES”, save your file, and upload it back to its original location.