WP Table Manager plugin is not installed correctly

WP Table Manager uses it's own framework which is automatically installed in the /wp-content/mu-plugins

Sometimes this directory has wrong permissions and WP Table Manager can't install its framework.
To fix this issue : 

  • Create the folder /wp-content/mu-plugins
  • Make sure the /wp-content/mu-plugins is writable by your webserver user
  • Go again to your wordpress administration page and check if you still have the error.

You still have the issue

  • Unzip the content of wp-table-manager.zip file on your local machine
  • Create the folder /wp-content/mu-plugins on your website if it doens't exist
  • Copy the content of the /wp-table-manager/framework/ folder from the previouly unzip files to the /wp-content/mu-plugins/ folder in your website server
  • Go again to your wordpress administration page, you should not have the error anymore