Where do I find the Illegal parameter count?

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1

I get this in the Fuse Monitor and terminal. How can I find the breaking parameter counter and reason behind the runtime error? Not much help in the logs.

System.Exception: Illegal parameter count
  at Outracks.Simulator.Runtime.ScopeClosure.Evaluate (Outracks.Simulator.Bytecode.Lambda p) <0x22353df8 + 0x00873> in <filename unknown>:0 
  at Outracks.Simulator.Bytecode.Expression.Match[T] (System.Func`2 a1, System.Func`2 a2, System.Func`2 a3, System.Func`2 a4, System.Func`2 a5, System.Func`2 a6, System.Func`2 a7, System.Func`2 a8, System.Func`2 a9, System.Func`2 a10, System.Func`2 a11, System.Func`2 a12, System.Func`2 a13, System.Func`2 a15, System.Func`2 a16) <0x2234f380 + 0x000e4> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.ScopeClosure.Evaluate (Outracks.Simulator.Bytecode.Expression expression) <0x2234ede0 + 0x00563> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.ScopeClosure.Execute (Outracks.Simulator.Bytecode.Lambda lambda, System.Object[] arguments) <0x2234e910 + 0x000ff> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.LambdaClosure.Func (System.Object a1) <0x223550a0 + 0x00064> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.LambdaClosure.Action (System.Object a1) <0x22355070 + 0x0001b> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.ScopeClosure.Execute (System.Object lambda, System.Object[] arguments) <0x22354bc0 + 0x002e5> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.ScopeClosure.Evaluate (Outracks.Simulator.Bytecode.CallLambda i) <0x22353d90 + 0x0004f> in <filename unknown>:0 
  at Outracks.Simulator.Bytecode.Expression.Match[T] (System.Func`2 a1, System.Func`2 a2, System.Func`2 a3, System.Func`2 a4, System.Func`2 a5, System.Func`2 a6, System.Func`2 a7, System.Func`2 a8, System.Func`2 a9, System.Func`2 a10, System.Func`2 a11, System.Func`2 a12, System.Func`2 a13, System.Func`2 a15, System.Func`2 a16) <0x2234f380 + 0x00261> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.ScopeClosure.Evaluate (Outracks.Simulator.Bytecode.Expression expression) <0x2234ede0 + 0x00563> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.ScopeClosure.Execute (IEnumerable`1 statements) <0x2234ec90 + 0x00077> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.ScopeClosure.Execute (Outracks.Simulator.Bytecode.Lambda lambda, System.Object[] arguments) <0x2234e910 + 0x00157> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.VirtualMachine.Execute (IReflection reflection, Outracks.Simulator.Bytecode.Lambda lambda, System.Object[] arguments) <0x2234e6a0 + 0x000af> in <filename unknown>:0 
  at Outracks.Simulator.Runtime.VirtualMachine.Execute (Outracks.Simulator.Bytecode.Lambda lambda, System.Object[] arguments) <0x2234e668 + 0x00023> in <filename unknown>:0 
  at Outracks.Simulator.Reifying.OnEnterState () <0x22352278 + 0x000b7> in <filename unknown>:0 
  at Outracks.Simulator.Application.SetState (Outracks.Simulator.State nextState) <0x152be248 + 0x00054> in <filename unknown>:0 
  at Outracks.Simulator.Application.OnUpdate () <0x152bdd60 + 0x000fb> in <filename unknown>:0 
  at Fuse.App.Update () <0x152bdc20 + 0x00026> in <filename unknown>:0