component SimpleMotionPath is defined more than once in this namespace. Remove the mapping to spark.effects.animation:SimpleMotionPath or spark.effects:SimpleMotionPath
guess I should file a bug - search my code base for a refernce to it - no joy
could it be in a .swc lib??
I've seen this error reported before where folks were using libraries that were built with earlier versions of the SDK (in which SimpleMotionPath lived in a different package). The fix is usually to make sure that all of your code and their code is built on the same version (or at least versions that don't have conflicting packages/classes, like in this situation)
got it - was a old .swc file