Should a module file look like this?
Since you're using Views module version 2.12, I looked up that file in the repository viewer:
http://drupalcode.org/project/views.git/blob/42fe4029ca7d7410f15933032a17e979bb0957c4:/handlers/views_handler_filter_in_operator.inc

Looks like line 206 should be:

$form['value']['#dependency'] = array($source =&gt; $this-&gt;operator_values(1));


I'd try re-downloading the entire Views module. Maybe your copy got corrupted along the way.