MissingMethodException when using FParsec

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Adding the nuget package for FParsec (v 1.0.2) to a new 'F# Program' query and running the tutorial sample code results in a System.MissingmethodException with message:

Method not found: 'Microsoft.FSharp.Core.FSharpFunc`2,FParsec.Reply`1> FParsec.CharParsers.pfloat()'.

Minimal code to reproduce is:

open FParsec
run pfloat "1.0"

I'm not exactly sure how to diagnose the problem, or where to go from here.
Any assistance anyone could provide would be greatly appreciated!

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