array_key_exists()

hello,
i got in 2 installations a problem, I really do not know whether it has to do so

in the latest entries calls tracker, i have 2 options in my admin.

all entries and user entries..also mine entries - if i want to show it..it calls a error

* warning: array_key_exists(): The first argument should be either a string or an integer in ./views/includes/view.inc on line 1199.
* warning: mysql_real_escape_string() expects parameter 1 to be string, object given in ./includes/database.mysql.inc on line 321.
* warning: Illegal offset type in ./views/includes/view.inc on line 1203.
* warning: Illegal offset type in ./views/includes/view.inc on line 1238.
* warning: Illegal offset type in isset or empty in ./views/views.module on line 699.