gistfile1.txt

Unhandled Exception: System.TypeLoadException: Could not load type 'System.Runtime.CompilerServices.Closure' from assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
   at DLRCachedCode.test$1(CodeContext $globalContext, FunctionCode $functionCode)
   at IronPython.Compiler.OnDiskScriptCode.Run()
   at IronPython.Runtime.PythonContext.InitializeModule(String fileName, ModuleContext moduleContext, ScriptCode scriptCode, ModuleOptions options)
   at IronPython.Runtime.ModuleLoader.load_module(CodeContext context, String fullName)
   at Microsoft.Scripting.Interpreter.FuncCallInstruction`4.Run(InterpretedFrame frame)
   at Microsoft.Scripting.Interpreter.Interpreter.Run(InterpretedFrame frame)
   at Microsoft.Scripting.Interpreter.LightLambda.Run4[T0,T1,T2,T3,TRet](T0 arg0, T1 arg1, T2 arg2, T3 arg3)
   at System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2)
   at IronPython.Runtime.PythonContext.Call(CodeContext context, Object func, Object arg0)
   at IronPython.Runtime.Importer.FindAndLoadModuleFromImporter(CodeContext context, Object importer, String fullName, List path, Object& ret)
   at IronPython.Runtime.Importer.TryLoadMetaPathModule(CodeContext context, String fullName, List path, Object& ret)
   at IronPython.Runtime.Importer.ImportTopAbsolute(CodeContext context, String name)
   at IronPython.Runtime.Importer.ImportModule(CodeContext context, Object globals, String modName, Boolean bottom, Int32 level)
   at IronPython.Hosting.PythonService.ImportModule(ScriptEngine engine, String name)