The problem is that the user credentials used by you and Campaign user(Neolane) have a differet level of permissions. Actions executed by neolane will be performed so check the authorization for you and a neolane user, or you may ask your IT team if your environment on premise instance or raise a support ticket for hosted environment for permissions.
I recently had a similar problem in our staging environment. Files created in a given directory had a different permission set so we could not even see their content. Support had to raise a change to make them accesible again.