I had this plugin working great with my thems and an up-to-date version of WP. Today I was offered to update the plugin, which I did.
Now I cannot have it working again.
So far :
I've desactivated all the other plugins
I've tried many combinations of the settings,
I've deactivated-reactivated it.
I've tried the "launch before page" option, putting code in head
I've uninstalled/deleted the files & reinstalled the plugin
Thanks a lot