Xamarin studio not loading any project after adding FSharp add-in from Tools

After installing Fsharp add-in from Tools -> Add-in Manager -> Gallery -> Mobile Development -> F# support for xamarin.android, xamarin not loading any project. Throwing exception as below,

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.IO.FileLoadException: Could not load file or assembly 'FSharp.Core, Version=4.3.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. Strong name validation failed. (Exception from HRESULT: 0x8013141A) ---> System.Security.SecurityException: Strong name validation failed. (Exception from HRESULT: 0x8013141A)
   --- End of inner exception stack trace ---
   at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
   at System.Reflection.RuntimeAssembly.InternalLoadFrom(String assemblyFile, Evidence securityEvidence, Byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm, Boolean forIntrospection, Boolean suppressSecurityChecks, StackCrawlMark& stackMark)
   at System.Reflection.Assembly.LoadFrom(String assemblyFile)
   at Mono.Addins.RuntimeAddin.LoadModule(ModuleDescription module, ArrayList asmList)
   at Mono.Addins.RuntimeAddin.EnsureAssembliesLoaded()
   at Mono.Addins.RuntimeAddin.GetType(String typeName, Boolean throwIfNotFound)
   at Mono.Addins.TypeExtensionNode.get_Type()
   at Mono.Addins.TypeExtensionNode.CreateInstance()
   at Mono.Addins.InstanceExtensionNode.GetInstance(Type expectedType)
   at MonoDevelop.Ide.Codons.NodeBuilderCodon.get_NodeBuilder()
   at MonoDevelop.Ide.Codons.SolutionPadCodon.BuildChildren()
   at MonoDevelop.Ide.Codons.SolutionPadCodon.CreatePad()
   at MonoDevelop.Ide.Codons.PadCodon.InitializePadContent(IPadWindow window)
   at MonoDevelop.Ide.Gui.DefaultWorkbench.CreatePadContent(Boolean force, PadCodon padCodon, PadWindow window, DockItem item)
   at MonoDevelop.Ide.Gui.DefaultWorkbench.<>c__DisplayClassb.<AddPad>b__7(Object , EventArgs )
   at MonoDevelop.Components.Docking.DockItem.SetupContent(Object ob, EventArgs args)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Delegate.DynamicInvokeImpl(Object[] args)
   at GLib.Signal.ClosureInvokedCB(Object o, ClosureInvokedArgs args)
   at GLib.SignalClosure.Invoke(ClosureInvokedArgs args)
   at GLib.SignalClosure.MarshalCallback(IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data)

Actually i uninstalled that add-in, but still i am getting the above exception

Please someone help me...