Eclipse C++ "not resolved" error

I’m trying to create a command based robot. A very simple one just for testing. I’m following a tutorial where the guy doesn’t get any of my errors
When I go and make a joystick in the OI, that is fine.



but then when I go and do anything else like creating my chassis nothing is “resolved” or declared(that what it says if you hover over the red stuff)
I know what declared is but you can clearly tell I declared…



I have downloaded and re-downloaded. Rebuilt indexes and everything in between. What I find weird is that is worked in the OI but not the rest.

Please Help, anything helps!!

Take a look at the #includes in your working example vs. chassis.h