I've just upgraded my project to Unity 5.1, and now monodevelop fails to build the project with the following error:
An item with the same key has already been added. (Error: System.ArgumentException) (Assembly-UnityScript)
I have lots of plugins (Standard Assets, iOSNative, ImageEffects among others), and can see no way of finding out where the problem is.
Anyone know how to narrow down where the problem might lie?
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