After upgrading a rails 1.2 website to 2.1, the ExceptionNotifier plugin no longer works, complaining about this error:
ActionView::TemplateFinder::InvalidViewPath: Unprocessed view path found: ‘/path/to/appname/vendor/plugins/exception_notification/lib/../views’. Set your view paths with #append_view_path, #prepend_view_path, or #view_paths=.
What causes it and how do I fix it?
You ought to upgrade to the newest Exception Notification plugin which is in its new home at GitHub.