WordPress uses a caching system to map SEO / human readable page links into WordPress’s native links. This process is called URL rewriting, and the cache is referred to as the URL Rewrite Cache. When using some plugins, this URL conversion cache can be come corrupted. The symptom of this is random 404 page errors for pages that actually exist.
Memberium Monthly User Webinar – May 2014: Developing Advanced Membership Sites With Memberium
There are as many ways to become successful as there are markets and audiences. The trick is to take informed and decisive and principled action. You don’t need to know everything, nobody is advocating shooting blindly. Evolve and refine your priorities and strategies. Change it if you must, but don’t get caught in the trap of chasing the strategy du jour. Strategies, unlike tactics take time to bear fruit, so be patient and consistent in your actions. Priorities like strategies should be part of your north star and should guide your decisions, not be guided by the decisions of the day.