You say it's not a plugin but your error states otherwise, are you sure you don't have a script outside the /plugins file that you may have? Try removing all plugins.
Remove plugins
If not plugins, move them from your directory and reinstall LSDPFR fresh.
Ensure all plugins and their addons are placed back in.
If not plugins, try removing mod folder, see if the problem is within OpenV
If your problems not solved, please update us.