MONO UNITY_4, version tags not working.

Randomly after a compile the tags seems to have just stopped working.

Code (csharp):

1.  
2. #if !UNITY_3 && !UNITY_4
3.  
4.     /// Clear flags to use for the reflection.
5.     public ReflectionProbeClearFlags ClearFlags = ReflectionProbeClearFlags.Skybox;
6.  
7.     /// Layers to include in the reflection.
8.     public LayerMask CullingMask = 0;
9.  
10.     #endif
11.  

now complains that.
The type of namespace name 'ReflectionProbeClearFlags' could not be found (are you missing a using directive or assembly reference?).

When this shouldn't even be evaluated as i'm using the latest version of Unity3D.


It was literally working, I changed a simple math equation in another script, recompiled now it complains. I reverted the change, save, closed, reopened, rebooted, the same.

 

Scratch that, literally right after posting this... I found that MONO got switched into "release" build instead of "debug".

Project->Active Configuration->Debug

Fixed the issue.
I must have hit a hot key, by mistake?

Leaving this here for a Google reference for another person.