Can't complete activity. user is not from allowed identity | Urgent!!

Hi,

it´s strange that adding your user to the Admin group didn´t help. Did your user login again to see if he really had all admin rights?

"user is not from allowed identity" appears when user is not in the Identity group needed to perform a specific task. 

Do you use Server Events that are triggered when voting? These events may try to perform some actions that are only allowed for certain identities.