Cannot preview transition, source has no motion?

Hi there,

I'm a complete noob with Unity so please bear with me.
I made two animations in Maya and have imported the .mb files into Unity. They both play perfectly, but I want to make a transition between the two animations. I followed the Unity tutorial on the animator, and on previous projects (with animations made in Unity) the transitions showed up in the inspector just fine.
With these two animations the previewthing in the inspector suddenly says "Cannot preview transition: source state does not have motion"

I have no idea what to do since I can't find a solution on google.

Does anyone know if I'm missing something important? If I import my maya animations as .fbx the rig animation doesn't come along, so fbx doesn't really work for me.

 

fbx doesn't work because you are missing something on export.
Make sure you have all bones and mesh selected - in the export dialogue make sure animation is checked. Should work just fine. Then look into blend trees and state machines. That'll get you going in the proper direction.