Random Java errors that don't make sense

[1168Programmer]

Today we reimaged the cRIO and updated the FIRST NetBeans plugins. Now our code is filled with random red error underlines on things that are certainly not errors, such as imports and declarations and even a few methods that were perfectly fine before the updating. The code still compiles fine with no real error messages, but it's a little worrying, not to mention annoying if a real error occurs.

1. No, there is not a semicolon missing.
2. This is the only laptop that has NetBeans on it. I uninstalled/reinstalled NetBeans after all the updating today and the "errors" didn't go away.
3. The code does still compile fine, but the errors won't go away...

Any help/ideas would be greatly appreciated.