Error while trying to edit/create content - Joomla! Forum - community, help and support

hello,
i installed joomla 2.5 , template bought. template comes sample data, , sql data base.

now every time when trying change content (any content) message:

warning: require_once(/home/content/83/9771983/html/administrator/components/com_finder/helpers/indexer/adapter.php) [function.require-once]: failed open stream: no such file or directory in /home/content/83/9771983/html/plugins/finder/categories/categories.php on line 16

fatal error: require_once() [function.require]: failed opening required '/home/content/83/9771983/html/administrator/components/com_finder/helpers/indexer/adapter.php' (include_path='.:/usr/local/php5_3/lib/php') in /home/content/83/9771983/html/plugins/finder/categories/categories.php on line 16

sometimes message when existing content:

juser: :_load: unable load user id: 54

i using k2 component, happens every time.

can please me?

hey guys, resolved second bug "juser: :_load: unable load user id: 54".
just added user, , changed id using phpmyadmin 54.
but can use warning , fatal error.