Warning: Use of undefined constant user_level - assumed 'user_level' (this will throw an Error in a future version of PHP) in /homepages/3/d98111892/htdocs/insanelabs/htdocs/wp-content/plugins/ultimate-google-analytics/ultimate_ga.php on line 524

Ooops!

It’s easy… if you have Apache installed then it means it’s not in your path. Did you complile your Apache yourself? If so it should be here:
/path-to-your-apache-folder/bin/htpasswd

Want to add it to your path:
PATH=$PATH:/path-to-your-directory

Or create a .bash_profile in your home directory and add that variable there, then execute
source ~/.bash_profile

Works for everything else as well!