Intellij: Everything is Red?

So, for some reason, my computer crashed today. When I started it back up and opened Intellij, everything was red. It didn't recognize any of the bukkit stuff, even though they were imported.

Do you guys know how to fix this?

 

Make sure your IDE has craftbukkit as an external jar that has been imported and is set to the right javadocs.

Or: http://stackoverflow.com/questions/...ect-cache-in-intellij-idealike-eclipses-clean

 

Trying removing your dependencies in your different projects and then re-adding them. Do you use Maven for dependency management?

 

As said by Stealth2800 , reimporting dependencies may work. I've had this issue before, I believe I solved it by deleting the settings profile.

 

Stealth2800 ZeusAllMighty11 Ok I fixed that part but now all the basic java stuff doesn't work...
HashMap, HashSet, etc
But stuff like if else statements work (obviously)

 

You need to reference the JDK again

 

Fixed! To anyone else having this problem
File -> invalidate caches