I finally uninstalled Both CodeWarrior and MQX 4.0, then re-installed them starting with CodeWarrior. Now I have "OS Awareness". It works for both MQX and MQX Lite. I don't know what went wrong before, but I was trying to get the MQX 3.8 patch for The AR4100 WiFi board in, and I don't have to do that since it's already in. So, I don't think I will be touching the environment for a while now.