So, I downloaded 1.5.4 today, opened multiplayer, clicked on my favorite server and BAM!, "disconnected, system impure". I find and click on the red shield at the top of my screen and out pops the list of my downloaded modules. The modules' manifest files seem to fail the IC for some reason. I'd love to have this fixed so I can play my brand new Mig-21 out against some F-5E jocks.