Have you updated WordPress?Can you try a install of WordPress?
I mean from version 4.3 to 4.3.1 or 4.2 to 4.3.1.
Hey,
In this moment, no. Today I upgraded to 4.4 and the error persist.
I’ve noticed that in URL bar appears for a little moment a text that may be of interest to you.
This is:
http://www.calcetineros.com/wp-admin/plugins.php?error=true&plugin=rating-system%2Frating-system.php&_error_nonce=56cc1d011f
Thanks!
To fix this, it would be helpful to see the actual error which prevents the activation.
Could you please add the following to your wp-config.php file:
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_DISPLAY', false );
define( 'WP_DEBUG_LOG', true );
If you then try to activate the plugin, it should create a file called debug.log in your wp-content directory.
If the file doesn’t get created, your server might be configured in a way to prevent new file creation. If so, create an empty file called debug.log yourself in the wp-content directory, make sure it has write permissions set (CHMOD 644 should normally be ok) and try to activate the plugin again.
Open the file and it should contain some error message(s). Please paste the errors you find there in this thread.
Presuming this is a live site (not a test site), after you’ve done that, undo the changes which you made in the wp-config.php file and delete the debug.log file.
Hoping the actual error will help move this forward.
