camera values are inverted

My first guess is also that there's a negative scale value on the null.   Also you said you cannot post a screenshot because you "have to mess wih the settings"?    Well you HAVE to mess with the setting to trouble shoot and fix the problem don;t you?   If something is wrong/broken and it's tied into a bunch of other stuff ,  you just have to carefully take it apart and put it back together.  That's how it goes.   And i cannot understand what setting you could possible mess up by providing screen shots?  

Open up multiple views and look at the relationship between the Camera and the Null in 3D space. Select the problem layers and presss the U key twice to reveal all modified properties. My first guess is that the camera has a Z value higher than the null or the null has been scaled. 

Doesn't really make sense unless you messed with the orientation settings. Impossible to tell without more specific info/ a screenshot.

Mylenium