These days I created an own Property Set for the getPage snippet, overwriting some of the default properties. All seams working as intended.
So I was surprised to find a long list of entries in the error log, all saying the same, just differing in the date/time:
[2014-07-30 09:38:54] (ERROR @ /www/htdocs/########/core/model/modx/processors/element/propertyset/get.php : 89) PHP warning: Invalid argument supplied for foreach()
The referred line of get.php is
foreach($property['options'] as &$option) {
What might cause this issue?