Error When Viewing Pages with Experiment Code

On wp-includes/pluggable.php (line 881) the wp_redirect is performed:
header("Location: $location", true, $status);

Apparently there already is some output before wp_redirect is executed. I don’t know if this is the most beautiful option and if it will work, but let’s try this:
In google-content-experiments.php:

• Place ob_start(); between */ and if ( !defined('WPE_GCE_PATH') )
• Place ob_end_flush(); right before the closing ?>

I added your suggested code but that just gave the same error.

I got it working another way by still using the ob_start(); but I had to added it to the function.php file.

The code I added to Function.php

//allow redirection, even if my theme starts to send output to the browser
add_action(‘init’, ‘do_output_buffer’);
function do_output_buffer() {
ob_start();
}

After I verified this would work. I decided to go back and test your suggestion again. I added ob_start() and ob_end_flush(). Same error so I figured I would just try ob_start() at the begining of google-content-experiments.php and not add ob_end_flush();

Adding only ob_start() to google-content-experiments.php actually fixed the problem. I am not sure what ob_start(); does or if not including ob_end_flush(); would have any negative impact.

Let me know if you think this is a valid approach or not.
Thanks
Greg