I used TortiseGit to get Westwind WebSurge from the following GIT repository:
https://github.com/rickstrahl/WestwindWebSurge
When I tried to open the solution file in the root of the directory I got this error:
SharpDevelop Version : 5.1.0.4936-Beta-3ea20cfa .NET Version : 4.5.50938 OS Version : Microsoft Windows NT 6.1.7601 Service Pack 1 Current culture : English (United States) (en-US) Running under WOW6432, processor architecture: x86-64 Working Set Memory : 137408kb GC Heap Memory : 11141kb Unhandled WPF exception Exception thrown: System.NotSupportedException: The given path's format is not supported. at System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath) at System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[ str, Boolean needFullPath) at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[ pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) at System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String[ pathList, Boolean checkForDuplicates, Boolean needFullPath) at System.IO.FileInfo.Init(String fileName, Boolean checkHost) at System.IO.FileInfo..ctor(String fileName) at ICSharpCode.SharpDevelop.Project.ProjectChangeWatcher.UpdateLastWriteTime() at ICSharpCode.SharpDevelop.Project.ProjectChangeWatcher..ctor(String fileName) at ICSharpCode.SharpDevelop.Project.AbstractProject.set_FileName(FileName value) at ICSharpCode.SharpDevelop.Project.AbstractProject..ctor(ProjectInformation information) at ICSharpCode.SharpDevelop.Project.ErrorProject..ctor(ProjectLoadInformation information, Exception exception) at ICSharpCode.SharpDevelop.Project.SolutionLoader.LoadProjectWithErrorHandling(ProjectLoadInformation projectInfo) at ICSharpCode.SharpDevelop.Project.SolutionLoader.ReadSolution(Solution solution, IProgressMonitor progress) at ICSharpCode.SharpDevelop.Project.SDProjectService.LoadSolutionFile(FileName fileName, IProgressMonitor progress) at ICSharpCode.SharpDevelop.Project.SDProjectService.OpenSolutionInternal(FileName fileName) at ICSharpCode.SharpDevelop.Project.SDProjectService.OpenSolutionOrProjectInternal(FileName fileName) at ICSharpCode.Core.FileUtility.<>c__DisplayClass13.b__12() at ICSharpCode.Core.FileUtility.ObservedLoad(FileOperationDelegate loadFile, FileName fileName, String message, FileErrorPolicy policy) at ICSharpCode.Core.FileUtility.ObservedLoad(NamedFileOperationDelegate saveFileAs, FileName fileName, String message, FileErrorPolicy policy) at ICSharpCode.Core.FileUtility.ObservedLoad(NamedFileOperationDelegate saveFileAs, FileName fileName, FileErrorPolicy policy) at ICSharpCode.SharpDevelop.Project.SDProjectService.OpenSolutionOrProject(FileName fileName) at ICSharpCode.SharpDevelop.Project.Commands.LoadSolution.Run() at ICSharpCode.StartPage.RecentProjectsControl.openSolutionClick(Object sender, RoutedEventArgs e) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e) at System.Windows.Controls.Primitives.ButtonBase.OnClick() at System.Windows.Controls.Button.OnClick() at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e) at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e) at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent) at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e) at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args) at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input) at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport) at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel) at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Interop.HwndSource.InputFilterMessage(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 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) ---- Recent log messages: 15:31:45.396 [1] DEBUG - ActiveViewContentChanged to ICSharpCode.StartPage.StartPageViewContent 15:31:45.404 [1] DEBUG - Creating pad ICSharpCode.SharpDevelop.Gui.PropertyPad... 15:31:45.432 [1] DEBUG - Service startup: ICSharpCode.SharpDevelop.WinForms.IWinFormsMenuService 15:31:45.433 [1] DEBUG - PropertyPad created 15:31:45.435 [1] DEBUG - Creating pad ICSharpCode.SharpDevelop.Project.ProjectBrowserPad... 15:31:45.435 [1] DEBUG - Service startup: ICSharpCode.SharpDevelop.WinForms.IWinFormsToolbarService 15:31:45.454 [1] DEBUG - Creating pad ICSharpCode.SharpDevelop.Gui.ErrorListPad... 15:31:45.615 [14] DEBUG - Preload-Thread started. 15:31:45.710 [1] DEBUG - Service startup: ICSharpCode.SharpDevelop.Editor.IEditorControlService 15:31:45.721 [1] DEBUG - Preload-Thread finished. 15:31:46.232 [1] DEBUG - [AddInManager2.Events] Package list download ended (success: True). 15:31:49.437 [1] DEBUG - Service startup: ICSharpCode.SharpDevelop.IFileSystem 15:31:49.440 [1] DEBUG - Service startup: ICSharpCode.SharpDevelop.Project.IMSBuildEngine 15:31:49.484 [1] INFO - Loading addin XAML Binding 15:31:49.487 [1] DEBUG - Service startup: ICSharpCode.SharpDevelop.Dom.IModelFactory 15:31:49.559 [1] INFO - Loading addin ASP.NET MVC Binding 15:31:49.562 [1] WARN - Project load error --> Exception: ICSharpCode.SharpDevelop.Project.ProjectLoadException: No backend for project type installed. at ICSharpCode.SharpDevelop.Project.SDProjectService.LoadProject(ProjectLoadInformation info) at ICSharpCode.SharpDevelop.Project.SolutionLoader.LoadProjectWithErrorHandling(ProjectLoadInformation projectInfo) 15:31:49.572 [1] DEBUG - Service startup: ICSharpCode.SharpDevelop.Workbench.IShutdownService 15:31:49.573 [16] WARN - System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\718651\AppData\Local\Temp\SharpDevelop5.1\WebSurge.9803fb80.prj'. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.InternalDelete(String path, Boolean checkHost) at System.IO.File.Delete(String path) at ICSharpCode.SharpDevelop.Parser.ProjectContentContainer.RemoveCache(String cacheFileName) 15:31:49.574 [17] WARN - System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\718651\AppData\Local\Temp\SharpDevelop5.1\WebSurge.Tests.20880fe0.prj'. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.InternalDelete(String path, Boolean checkHost) at System.IO.File.Delete(String path) at ICSharpCode.SharpDevelop.Parser.ProjectContentContainer.RemoveCache(String cacheFileName) 15:31:49.574 [1] ERROR - Unhandled WPF exception --> Exception: System.NotSupportedException: The given path's format is not supported. at System.Security.Util.StringExpressionSet.CanonicalizePath(String path, Boolean needFullPath) at System.Security.Util.StringExpressionSet.CreateListFromExpressions(String[ str, Boolean needFullPath) at System.Security.Permissions.FileIOPermission.AddPathList(FileIOPermissionAccess access, AccessControlActions control, String[ pathListOrig, Boolean checkForDuplicates, Boolean needFullPath, Boolean copyPathList) at System.Security.Permissions.FileIOPermission..ctor(FileIOPermissionAccess access, String[ pathList, Boolean checkForDuplicates, Boolean needFullPath) at System.IO.FileInfo.Init(String fileName, Boolean checkHost) at System.IO.FileInfo..ctor(String fileName) at ICSharpCode.SharpDevelop.Project.ProjectChangeWatcher.UpdateLastWriteTime() at ICSharpCode.SharpDevelop.Project.ProjectChangeWatcher..ctor(String fileName) at ICSharpCode.SharpDevelop.Project.AbstractProject.set_FileName(FileName value) at ICSharpCode.SharpDevelop.Project.AbstractProject..ctor(ProjectInformation information) at ICSharpCode.SharpDevelop.Project.ErrorProject..ctor(ProjectLoadInformation information, Exception exception) at ICSharpCode.SharpDevelop.Project.SolutionLoader.LoadProjectWithErrorHandling(ProjectLoadInformation projectInfo) at ICSharpCode.SharpDevelop.Project.SolutionLoader.ReadSolution(Solution solution, IProgressMonitor progress) at ICSharpCode.SharpDevelop.Project.SDProjectService.LoadSolutionFile(FileName fileName, IProgressMonitor progress) at ICSharpCode.SharpDevelop.Project.SDProjectService.OpenSolutionInternal(FileName fileName) at ICSharpCode.SharpDevelop.Project.SDProjectService.OpenSolutionOrProjectInternal(FileName fileName) at ICSharpCode.Core.FileUtility.<>c__DisplayClass13.b__12() at ICSharpCode.Core.FileUtility.ObservedLoad(FileOperationDelegate loadFile, FileName fileName, String message, FileErrorPolicy policy) at ICSharpCode.Core.FileUtility.ObservedLoad(NamedFileOperationDelegate saveFileAs, FileName fileName, String message, FileErrorPolicy policy) at ICSharpCode.Core.FileUtility.ObservedLoad(NamedFileOperationDelegate saveFileAs, FileName fileName, FileErrorPolicy policy) at ICSharpCode.SharpDevelop.Project.SDProjectService.OpenSolutionOrProject(FileName fileName) at ICSharpCode.SharpDevelop.Project.Commands.LoadSolution.Run() at ICSharpCode.StartPage.RecentProjectsControl.openSolutionClick(Object sender, RoutedEventArgs e) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e) at System.Windows.Controls.Primitives.ButtonBase.OnClick() at System.Windows.Controls.Button.OnClick() at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e) at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e) at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent) at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e) at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args) at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input) at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport) at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel) at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Interop.HwndSource.InputFilterMessage(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 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) 15:31:49.577 [16] WARN - System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\718651\AppData\Local\Temp\SharpDevelop5.1\WebSurge.Core.ad1e5e92.prj'. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.InternalDelete(String path, Boolean checkHost) at System.IO.File.Delete(String path) at ICSharpCode.SharpDevelop.Parser.ProjectContentContainer.RemoveCache(String cacheFileName) 15:31:49.577 [17] WARN - System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\718651\AppData\Local\Temp\SharpDevelop5.1\WebSurgeCli.f70e7fec.prj'. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.InternalDelete(String path, Boolean checkHost) at System.IO.File.Delete(String path) at ICSharpCode.SharpDevelop.Parser.ProjectContentContainer.RemoveCache(String cacheFileName) 15:31:49.584 [16] WARN - System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\718651\AppData\Local\Temp\SharpDevelop5.1\WebSurge.Server.16db118a.prj'. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.InternalDelete(String path, Boolean checkHost) at System.IO.File.Delete(String path) at ICSharpCode.SharpDevelop.Parser.ProjectContentContainer.RemoveCache(String cacheFileName) 15:31:49.584 [17] WARN - System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\718651\AppData\Local\Temp\SharpDevelop5.1\WebSurge.SampleWeb.60538d00.prj'. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.File.InternalDelete(String path, Boolean checkHost) at System.IO.File.Delete(String path) at ICSharpCode.SharpDevelop.Parser.ProjectContentContainer.RemoveCache(String cacheFileName) ---- Post-error application state information: Installed 3rd party AddIns: ProjectService.CurrentSolution: ProjectService.CurrentProject: Workbench.ActiveContent: ICSharpCode.StartPage.StartPageViewContent