According to the Author of W3 Total Cache Better WordPress Minify and W3 Total Cache are Not compatible with each-other due to the fact that they are rpetty much based on the same code.
OK, after about 20 mins of searching and trying, the solution is Pretty easy.
Of course it’s a “solution” only if you are using W3 Total Cache.
You’ll have to enable the minification feature first, without that your pages won’t be minified of course.
[IMPORTANT:]
Please Disable Inline JS Minification under your Minify settings and Disable Line break removal under the Javascript tab on the Minify page, because if you don’t your WordPress Dashboard may misfunction.
So first, go into your preferred code editor and edit the following two files:
wp-content\plugins\w3-total-cache\lib\W3\Plugin\TotalCache.php
search for: function can_ob()
‘ob’ is not for Object Cache, it is for Check if we can do modify contents as the plugin’s author noted above the function
below that just modify the lines to
if (defined('WP_ADMIN')) {
return true;
}
after that you have to modify the following file:
wp-content\plugins\w3-total-cache\lib\W3\Plugin\Minify.php
search for: function can_minify()
modify the lines to
if (defined('WP_ADMIN')) {
//$this->minify_reject_reason = 'wp-admin';//comment out this line
return true;
}