Addons...Not Working!

I have all of my addons and they all worked fine on GMod before I un-installed steam and re-installed it. But now, none of my addons are loading into Gmod and they are all in the correct addons folder and all Decompiled and I even restarted Steam and Gmod.
Help?!

The only idea I can think of is to redownload the addons again. I’ve never experienced this type of problem, so sorry if I’m not too helpful.