Particle System error in Unity 3.5

Hello everyone:

I just create a empty scene and add a particle system to it. As I run it, a warning is like this:

MissingMethodException: Cannot find the requested method.
UnityEditor.ParticleEffectUI.RefreshShowOnlySelected ()
UnityEditor.ParticleEffectUI.SetShowOnlySelectedMode (Boolean enable)
UnityEditor.ParticleEffectUI.Clear ()
UnityEditor.ParticleSystemInspector.OnDisable ()

do you have any suggestion?

I use unity 3.5 for mac, and I have the same trouble too. Hope someone could give me some advice