There seems to be a bug in Unity 5.2 when using AnimatorOverrideControllers. These are used in CommandBro and Pixtroid samples for shoot animations.
We are currently investigating but at this stage suggest you:
1. Use Unity 5.1 (this version seems to be a lot more stable in general).
2. If you must use 5.2 don't use animation overrides (for example instead set the AnimationState in the Attack movement).
This page will be updated when a fix is available (if possible, as mentioned it seems to be a Unity bug).
If you want to play the samples in 5.2 you can disable the overrides which will mean everything will work, except the shoot animations: