I ran D/U in standard mode and Recovery mode. Nothing. I logged out of my Mac and logged back in using my alternate login and everything worked. I went back into my standard login and it's still not working. So, I am thinking something is corrupted.
Where do I go from here?
You have gone through the typical first level troubleshooting steps so take it to the next level and follow the steps in
this Apple Knowledge Base article to troubleshoot using a safe boot.
