For input string: "unlimited"

For input string: "unlimited"

Hi every body

I have installed ADManager Plus on my client and add my AD user to " Help Desk Technicians" the roles is super admin.
when I try to login to ADManager Plus it show me this error:
UserName: mydomain\usersname
Password : my password
 For input string: "unlimited"

Please help me what should I do?

                New to ADSelfService Plus?