Could not link assemblies: Mono.Linker.ResolutionException: Can not resolve reference: System.Boolean System.Type::op_Inequality(System.Type,System.Type)
  at Mono.Linker.Steps.MarkStep.ResolveMethodDefinition (Mono.Cecil.MethodReference method) [0x00000] in <filename unknown>:0
  at Mono.Linker.Steps.MarkStep.MarkMethod (Mono.Cecil.MethodReference reference) [0x00000] in <filename unknown>:0
  at Mono.Linker.Steps.MarkStep.MarkInstruction (Mono.Cecil.Cil.Instruction instruction) [0x00000] in <filename unknown>:0
  at Mono.Linker.Steps.MarkStep.MarkMethodBody (Mono.Cecil.Cil.MethodBody body) [0x00000] in <filename unknown>:0
  at Mono.Linker.Steps.MarkStep.ProcessMethod (Mono.Cecil.MethodDefinition method) [0x00000] in <filename unknown>:0
  at Mono.Linker.Steps.MarkStep.ProcessQueue () [0x00000] in <filename unknown>:0
  at Mono.Linker.Steps.MarkStep.Process () [0x00000] in <filename unknown>:0
  at Mono.Linker.Steps.MarkStep.Process (Mono.Linker.LinkContext context) [0x00000] in <filename unknown>:0
  at Mono.Linker.Pipeline.Process (Mono.Linker.LinkContext context) [0x00000] in <filename unknown>:0
  at MonoTouch.Tuner.Linker.Run (Mono.Linker.Pipeline pipeline, Mono.Linker.LinkContext context) [0x00000] in <filename unknown>:0
mtouch exited with code 1