I've been using this addon for a suuuuuper long time, and I love it (my profile picture should make that obvious), but, at least within SRB2 v2.2.9 (I haven't tested earlier versions of SRB2), there seem to be a few bugs.
1. silverconfig.dat doesn't work. At all. This isn't too much of a problem, since you can just manually set everything using a .txt file... until you need to resynch on a server and the game suddenly decides to revert my controls, so I go and Psycho Boost into a pit. Manually doing this all isn't game-breaking, but it certainly makes getting Silver going a bit of a hassle.
2. Silver's HUD completely breaks during ringslinger modes. Now, that is game-breaking. Sometimes, my friends and I enjoy settling down for a game or two of Tag, but I always have to switch away from Silver whenever we do. It's... kind of annoying, really. Everything functions just fine, but not being able to see your ammo nor telekinesis meter is a preeeeeetty big deal.
So, yeah. I just hope this is all an easy fix...