Has anyone else been experience the problem with the "Action 'UploadForm' isn't allowed on class NewsletterAdmin" error? Its pretty serious. This means that I can't implement the Newsletter module on any new sites.
I've added 'UploadForm' to the list of allowed actions on NewsletterAdmin Line 39, but it still doesn't work. You bypass the error, but when you continue through the process to import the data the iframe gets redirected to the newsletter admin page.