Cannot delete user accounts

Hi all,   I am having issues deleting accounts in one of my apps. According to my security settings (which I have been checking for the last 30 minutes), I should be able to delete an account. However, when I click the delete button, I get the following error: Deleting object failed for security reasons. When I check the logs, there are no more details. I have ensured I that I have permissions to delete all objects affected by a cascading delete. How do I go about troubleshooting this?  
1 answers

Check the project role security settings for this role, this is needed since your deleting a generalization of the system.user object