Thanks for your response Kurt
The error I’m getting is:
[12-May-2012 19:57:23] PHP Warning: require_once(/home/site/public_html/wp-content/mu-plugins/../plugins/p3-profiler/start-profile.php) [<a href='function.require-once'>function.require-once</a>]: failed to open stream: No such file or directory in /home/site/public_html/wp-content/mu-plugins/p3-profiler.php on line 2
[12-May-2012 19:57:23] PHP Fatal error: require_once() [<a href='function.require'>function.require</a>]: Failed opening required '/home/site/public_html/wp-content/mu-plugins/../plugins/p3-profiler/start-profile.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/site/public_html/wp-content/mu-plugins/p3-profiler.php on line 2
[12-May-2012 19:57:23] PHP Warning: require_once(/home/site/public_html/wp-content/mu-plugins/../plugins/p3-profiler/start-profile.php) [<a href='function.require-once'>function.require-once</a>]: failed to open stream: No such file or directory in /home/site/public_html/wp-content/mu-plugins/p3-profiler.php on line 2
[12-May-2012 19:57:23] PHP Fatal error: require_once() [<a href='function.require'>function.require</a>]: Failed opening required '/home/site/public_html/wp-content/mu-plugins/../plugins/p3-profiler/start-profile.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/site/public_html/wp-content/mu-plugins/p3-profiler.php on line 2
Which indicates to me that the mu-plugin isn’t finding the plugin file. I tried to hardcode the link:
require_once( '/home/site/public_html/wp-content/plugins/p3-profiler/start-profile.php' ); ?>
That didn’t work either