Well, so i played with this addon for about 2 years, 1 year ago i ended playing so i was going into another account. Then about 2 months ago i hopped back onto GMod to play with friends cuz they bought it (finally) and we selected ARC9 to play with. We downloaded Smorgasboard and Gunsmith Reloaded. And im getting that error, ARC9, ARC:CW both have the same error. Can someone help? What's wrong right now, cuz my friend downloaded and it works perfectly on his server, but mine is not working...

If you need more info it will be nice if you ask in comments!