I just ran across a few instances in which ReSharper is tagging EditorBrowsableState.Never as an invalid attribute argument. The code example is as follows:
public enum InternalState
None = 0,
Something = 1,
SomethingElse = 2
The EditorBrowsable attribute is used on several classes, methods, and enumerations in the project, and ReSharper is flagging an invalid attribute argument only on the attributes for enumerations.