Assertion failed on expression: 'IsNormalized...

I upgraded a game Unity 5.6patch3, but there is a new unity big created, in process of debugging I got this:

Assertion failed on expression: 'IsNormalized(dir)'
UnityEngine.Physics:Linecast(Vector3, Vector3)

and:

Assertion failed on expression: 'IsNormalized(ray.GetDirection())'
UnityEngine.Physics:Linecast(Vector3, Vector3)

I dont think its related to my issue,but interesting to know what it means?

 

It sounds like unity is expecting a particular vector to be of magnitude 1 , but it's not. ( a "normalized" or "normal" vector is used to define a direction but NOT a distance, wich is why it always has a magnitude of 1) I can only assume you are somehow passing a vector to the physics engine that it expect to be a normalized vector, but it isn't.

Physics.Raycast's second parameter is an example of a vector unity probably expects to be normalized. Though I think that function WILL work with a regular vector, it will probably normalize it internally, which COULD cause a performance hit.

 

Popping and answer in as I had same issue as OP and not caused by the responses mentioned so far. The issue for me was that the camera had a 'Flare Layer' component on it. When I unticked that, the messages stopped.

 

Thank you!

 

Same issue for me. Disabling the Flare layer on the FPSController resolve the issue for me as well.