For some reason I don’t see the plugin name of wp-masonry-layout in the admin menu?! I’m running hatch theme on WP 3.9.2. As far as I know multisite is not enabled (I read somewhere that this could be the root cause).
I also tried to manually upload the plugin via ftp-server but it turned out the same thing… the plugin ist not showing in the admin menu.
Can anyone help? Thx in advance!