RSRP-461742: An item with the same key has already been added.

 at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)

 at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
 at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
 at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer)
 at JetBrains.ReSharper.Features.SolBuilderDuo.Services.ProjectsPersistentKeeper.RecalculateProjects()
 at JetBrains.Threading.GroupingEvent.Execute()

 at JetBrains.Util.Logging.Logger.LogException(Exception ex)

 at JetBrains.Util.Logging.Logger.LogException(Exception ex)
 at JetBrains.Threading.GroupingEvent.Execute()
 at JetBrains.Threading.GroupingEventHost.ExecuteExpiredEvents()
 at JetBrains.Threading.ReentrancyGuard.Execute(String name, Action action)
 at JetBrains.Threading.ReentrancyGuard.ExecuteOrQueue(String name, Action action, TaskPriority priority)
 at JetBrains.Threading.GroupingEventHost.OnClockTimerTick()
 at JetBrains.Threading.GroupingEventHost.ClockTimer.OnTimerTick(Object sender, EventArgs e)
 at System.Windows.Forms.Timer.OnTick(EventArgs e)
 at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
 at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
 at JetBrains.Interop.WinApi.User32Dll.DispatchMessageW(MSG* lpmsg)
 at JetBrains.Interop.WinApi.User32Dll.DispatchMessageW(MSG* lpmsg)
 at JetBrains.Util.Concurrency.WinJetDispatcher.WinJetDispatcherStaticMethods.InternalPumpMessagesOnce()
 at JetBrains.Util.Concurrency.WinJetDispatcher.WinJetDispatcherStaticMethods.JetBrains.Util.Concurrency.IJetDispatcherStaticMethods.Run()
 at JetBrains.ReSharper.Host.Product.ReSharperHostMain.Main(Lifetime lifetime, IReSharperHostSettings settings, ILogger logger, ShellProtocol protocol, RdModelRoot modelRoot, ApplicationShutdownRequests shutdownRequests)
 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.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
 at JetBrains.Application.Environment.RunsPublicStaticIntMain.<>c__DisplayClass4.<.ctor>b__0()
 at JetBrains.Util.Logging.Logger.Catch(Action action)
 at JetBrains.Threading.JetDispatcher.Closure.Execute()
 at JetBrains.Util.Concurrency.WinJetDispatcher.ProcessQueue()
 at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
 at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
 at System.Windows.Threading.DispatcherOperation.InvokeImpl()
 at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
 at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
 at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
 at MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state)
 at System.Windows.Threading.DispatcherOperation.Invoke()
 at System.Windows.Threading.Dispatcher.ProcessQueue()
 at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
 at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
 at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
 at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
 at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
 at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
 at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
 at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
 at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
 at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
 at JetBrains.DataFlow.Lifetimes.Using(Action`1 λ)
 at JetBrains.Application.Environment.IJetHostEx.RunHostMessageLoop(IComponentContainer containerEnv)
 at JetBrains.Application.Environment.HostParameters.JetHostParametersCaller.RunMainLoop(ComponentContainer containerEnv)
 at JetBrains.Application.Environment.JetEnvironment.InternalRun(JetHostParametersCaller host, ComponentContainer containerEnv)
 at JetBrains.Application.Environment.JetEnvironment.CreateAndRun(Full hostparams)
 at JetBrains.ReSharper.Host.Product.ReSharperHostProgram.MainX(Assembly assembly, HostInfo hostInfo, String[] args)
 at JetBrains.DataFlow.Lifetimes.Using[TRetVal](Func`2 λ)
 at JetBrains.ReSharper.Host.Product.ReSharperHostProgram.Main()
 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.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
 at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)