opened a solution with wix project ReSharper 3.1 Version=3.1.584.3, Edition=, Built=2007-12-20T19:16:46, Configuration=ReSharper_AddIn, VsVersion=9.0 JetBrains.Util.InternalErrorException: Specified cast is not valid. ---> System.InvalidCastException: Specified cast is not valid. at JetBrains.VSAddin.ProjectModel.VSBuildSettingsManagerImpl.RetrievePropertiesFromVS() in c:\A\work\be08dc054b0f1225\src\VSAddin\src\ProjectModel\VSBuildSettingsManagerImpl.cs:line 188 at JetBrains.VSAddin.ProjectModel.VSBuildSettingsManagerImpl.Refresh() in c:\A\work\be08dc054b0f1225\src\VSAddin\src\ProjectModel\VSBuildSettingsManagerImpl.cs:line 136 at JetBrains.VSAddin.ProjectModel.VSBuildSettingsManagerImpl.<AfterProjectOpened>b__1() in c:\A\work\be08dc054b0f1225\src\VSAddin\src\ProjectModel\VSBuildSettingsManagerImpl.cs:line 125 at JetBrains.UI.Shell.UIApplicationShell.InvokePendingActions() in c:\A\work\be08dc054b0f1225\Platform\src\JetBrains.UI\src\Shell\UIApplicationShell.cs:line 267 — End of inner exception stack trace — at JetBrains.Util.Logger.LogExceptionEx(Exception, String, Boolean) in c:\A\work\be08dc054b0f1225\Platform\src\JetBrains.Util\src\Logger\Logger.cs:line 263 column 4 at JetBrains.Util.Logger.LogException(Exception) in c:\A\work\be08dc054b0f1225\Platform\src\JetBrains.Util\src\Logger\Logger.cs:line 273 column 3 at JetBrains.UI.Shell.UIApplicationShell.InvokePendingActions() in c:\A\work\be08dc054b0f1225\Platform\src\JetBrains.UI\src\Shell\UIApplicationShell.cs:line 275 column 15 at JetBrains.UI.Shell.UIApplicationShell.InvokeReentrantSafe(Action) in c:\A\work\be08dc054b0f1225\Platform\src\JetBrains.UI\src\Shell\UIApplicationShell.cs:line 554 column 5 at JetBrains.VSAddin.ProjectModel.VSBuildSettingsManagerImpl.<AfterProjectOpened>b__0() in c:\A\work\be08dc054b0f1225\src\VSAddin\src\ProjectModel\VSBuildSettingsManagerImpl.cs:line 120 column 33 at JetBrains.Shell.PendingAction.Execute() in c:\A\work\be08dc054b0f1225\Platform\src\JetBrains.Shell\src\Invocator.cs:line 286 column 13 at JetBrains.Shell.Invocator.ProcessQueue() in c:\A\work\be08dc054b0f1225\Platform\src\JetBrains.Shell\src\Invocator.cs:line 129 column 11 at System.RuntimeMethodHandle._InvokeMethodFast(Object, Object[], SignatureStruct&, MethodAttributes, RuntimeTypeHandle) at System.RuntimeMethodHandle.InvokeMethodFast(Object, Object[], Signature, MethodAttributes, RuntimeTypeHandle) at System.Reflection.RuntimeMethodInfo.Invoke(Object, BindingFlags, Binder, Object[], CultureInfo, Boolean) at System.Delegate.DynamicInvokeImpl(Object[]) at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry) at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object) at System.Threading.ExecutionContext.runTryCode(Object) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode, CleanupCode, Object) at System.Threading.ExecutionContext.RunInternal(ExecutionContext, ContextCallback, Object) at System.Threading.ExecutionContext.Run(ExecutionContext, ContextCallback, Object) at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry) at System.Windows.Forms.Control.InvokeMarshaledCallbacks() at System.Windows.Forms.Control.WndProc(Message&) at System.Windows.Forms.ScrollableControl.WndProc(Message&) at System.Windows.Forms.ContainerControl.WndProc(Message&) at System.Windows.Forms.Form.WndProc(Message&) at System.Windows.Forms.ControlNativeWindow.OnMessage(Message&) at System.Windows.Forms.ControlNativeWindow.WndProc(Message&) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr, Int32, IntPtr, IntPtr)