So on my server we have been using Permissions Bukkit for some time. today we tried changing over to Essential and we are getting this error, I have tried changing things in the global groups but the same error occurs and the /manload command doesn't work.

If you could provide some assistance or even re write the globalgroups and send the pastebin I would be extremely grateful, Thank you.

config.yml -- http://pastebin.com/adcVTztm
error.log -- http://pastebin.com/bbpkZjUH
groups.yml -- http://pastebin.com/Pwz3tZqi
globalgroups -- http://pastebin.com/4tH8c7t2

My skype is:avioneri i could help me trough skype.