Wednesday, April 26, 2017
Counter-Strike: Global Offensive and possibly other Source servers have been updated by VALVe and this has broken compatibility with SourceMod and possibly other plugins. This can be fixed by updating SourceMod.
You can update your SourceMod by going to Files → Local Plugins. From this page you can click Unpack on both of these plugins and new versions will be installed to your server. Do note that updating SourceMod will reset your SourceMod configs which contains settings like your admin definitions. Please backup your SourceMod configs folder beforehand and replace the default configs with your own after updating.