Warning: "Setting scale failed, ignoring request." ?

Has anyone ever gotten a warning in Unity, "Setting scale failed, ignoring request. Please check all scaling axes are non-zero."?

I'm getting this error. The axes are non-zero, the exact line is below. None of the object's parents are zero-scale either. This is weird though, setting scale to zero is usually fine anyway.

Exact error message:

Setting scale failed, ignoring request. Please check all scaling axes are non-zero. UnityEngine.Transform:set_localScale(Vector3) EditorUI:LoadLibrary(Libraries, Environments, Environments, Boolean, Int32) (at Assets/Scripts/LevelEditor/EditorUI.cs:322) EditorUI:LoadLibrary(Libraries, Environments) (at Assets/Scripts/LevelEditor/EditorUI.cs:155)

Exact code from the line:

 selectedTile.transform.localScale = new Vector3 (0.2f, 0.0002f, 0.0002f);

Any insight? 99% of the time this code works perfectly, it just infrequently generates this error. Thanks!