Okay, this is annoying but every single time you get ingame the very first thing you should do is hit and hold the Z key, or the "down" button on the digital cross on your gamepad. If you see a list of players of some sort, congratulations! Your scripts all loaded and you can rest easy.
If you don't see anything, your scripts did not load properly and you need to exit the server and come back in until you see the player list. This isn't a foolproof way to make sure everything's working, but it is the quickest and easiest thing to do.