NullReferenceException when creating new WPF application project

[galich]

extensionProperties is null in CSharpProject.cs:145

if (extensionProperties.IsDirty) {
    var propertiesXElement = extensionProperties.Save();
    SaveProjectExtensions(ExtensionPropertiesName, propertiesXElement);
    extensionProperties.IsDirty = false;
}

exception

System.NullReferenceException: Object reference not set to an instance of an object.

   at CSharpBinding.CSharpProject.Save(String fileName) in c:\Dev\src\src\AddIns\BackendBindings\CSharpBinding\Project\Src\Project\CSharpProject.cs:line 145
   at ICSharpCode.SharpDevelop.Project.AbstractProject.Save() in c:\Dev\src\src\Main\Base\Project\Src\Project\AbstractProject.cs:line 302
   at ICSharpCode.SharpDevelop.Templates.ProjectDescriptor.CreateProject(ProjectTemplateResult templateResults, String defaultLanguage, ISolutionFolder target) in c:\Dev\src\src\Main\SharpDevelop\Templates\Project\ProjectDescriptor.cs:line 533
   at ICSharpCode.SharpDevelop.Templates.ProjectTemplateImpl.CreateProjects(ProjectTemplateOptions options) in c:\Dev\src\src\Main\SharpDevelop\Templates\Project\ProjectTemplateImpl.cs:line 284
   at ICSharpCode.SharpDevelop.Templates.ProjectTemplate.CreateAndOpenSolution(ProjectTemplateOptions options, String solutionDirectory, String solutionName) in c:\Dev\src\src\Main\Base\Project\Templates\ProjectTemplate.cs:line 65
   at ICSharpCode.SharpDevelop.Project.Dialogs.NewProjectDialog.CreateProject() in c:\Dev\src\src\Main\Base\Project\Src\Gui\Dialogs\NewProjectDialog.cs:line 338
   at ICSharpCode.SharpDevelop.Project.Dialogs.NewProjectDialog.TryCreateProject(Object sender, EventArgs e) in c:\Dev\src\src\Main\Base\Project\Src\Gui\Dialogs\NewProjectDialog.cs:line 285
   at System.Windows.Forms.Control.OnClick(EventArgs e)