Why so red? IntelliJ seems to think every declaration/method cannot be found/resolved

Question

I just installed and re-installed IntelliJ. Every Java file is coming up RED. I checked the JDK; it is at 1.6.##. The maven clean install build worked just fine

Answer 1

I could not get any of these solutions to work for me. I had to manually go to every method/class that I got the error on and import it manually. After that everything was fine.