activation problem

Hello!
Line 2 in no-hentry.php contains a namespace and nothing else. I’ve googled and found this thread: http://stackoverflow.com/questions/12650836/getting-a-syntax-error-unexpected-t-string-for-namespace-line

It seems like namespaces where introduced in PHP 5.3 so I guess you’re using an old version of PHP. Instead of doing backwards compatibility I’ll recommend you to contact your hosting provider and upgrade PHP. (PHP 5.3 was released at year 2010 and we are at version 7 now).

Good luck!