[Mitchell]

Originally Posted by Bloody Toaster Tested just now on my server, the upgrade menu shows up and I can upgrade everything but when I click accept it all goes away and credits reset. I'm not using this on an MvM map, my server only has 20 players so I can't run MvM maps, I assumed this plugin was for people who can't run MvM maps anyway. I tried updating SDKHooks to 2.1, still nothing. I'm going to try the SDKHooks beta right now.

This was made for MVM that meet the requirements (I assume) is the reason you are getting those errors.