I am helping a friend sort out his contact form. Not sure what's wrong with it yet but noticed that the AJAX request to send the mail returns an error in unknown line 0. Seems pretty weird to me. What would cause PHP to not be able to tell us which file or line is causing the problem?
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<b>Warning</b>: Unknown: failed to open stream: No such file or directory in <b>Unknown</b> on line <b>0</b><br />
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<b>Fatal error</b>: Unknown: Failed opening required '/home/user/example.com/filename.php' (include_path='.:/usr/local/lib/php:/usr/local/php5/lib/pear') in <b>Unknown</b> on line <b>0</b><br />