I’ve made a custom module that successfully adds a new menu in the admin->configuration section and saves some settings to magento config, and also creates a table at first run/install. Everything works great locally, but when I move the module to another server I get a 404 error when clicking the link added in the admin area, and nothing seem to work – for maybe a couple of hours. Eventually it just starts to work. I’ve usually just came back the next day and the 404 is gone and everything works as expected, but if I try to clear all caches, reindex the site, even manually clearing the var folder – nothing will help. It will still give me a 404 error until a couple of hours or a day later.
I don’t fully grasp what I should do to avoid the error – but I’m just confused as to how this problem can go away by itself after a while?
Thanks in advance!
This is very common when installing a new extension (that adds Admin pages). All you need to do is log out, and log back in.