http://www.bloYou don’t have permission to view this site. Please contact the system administrator.

I've tried to login as one of the users this plugin just registered, and I get this error. "You don’t have permission to view this site. Please contact the system administrator."
This is the url I tried to access http://www.blog.utm.my/faiez/wp-admin and it redirects me to this url http://www.blog.utm.my/faiez/wp-admin/?c=5