I did exactly as instructed and still received an error, pasted below. It seems the error first started when I had two solutions open, the live demo and my solution. I was locating needed class files in the live demo and adding them to my solution, then all of a sudden everything relating to telerik, even the assemblies, stopped working.
After uninstalling-reinstalling a couple times I'm now able to edit my previously created telerik solutions normally.
if this helps here is some more info. I'm on VS 2015 enterprise NOT updated to update1.
Error occurred while running wizard.
System.Windows.Markup.XamlParseException: Set property 'System.Windows.ResourceDictionary.Source' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'Telerik.Windows.Themes.Modern.2012.2.0903.1135, Culture=neutral' or one of its dependencies. The system cannot find the file specified.
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.Assembly.Load(AssemblyName assemblyRef)
at System.Windows.Navigation.BaseUriHelper.GetLoadedAssembly(String assemblyName, String assemblyVersion, String assemblyKey)
at MS.Internal.AppModel.ResourceContainer.GetResourceManagerWrapper(Uri uri, String& partName, Boolean& isContentFile)
at MS.Internal.AppModel.ResourceContainer.GetPartCore(Uri uri)
at System.IO.Packaging.Package.GetPartHelper(Uri partUri)
at System.IO.Packaging.Package.GetPart(Uri partUri)
at System.IO.Packaging.PackWebResponse.CachedResponse.GetResponseStream()
at System.IO.Packaging.PackWebResponse.GetResponseStream()
at System.IO.Packaging.PackWebResponse.get_ContentType()
at MS.Internal.WpfWebRequestHelper.GetContentType(WebResponse response)
at MS.Internal.WpfWebRequestHelper.GetResponseStream(WebRequest request, ContentType& contentType)
at System.Windows.ResourceDictionary.set_Source(Uri value)
at System.Windows.Baml2006.WpfSharedBamlSchemaContext.<>c__DisplayClass0.<Create_BamlProperty_ResourceDictionary_Source>b__453(Object target, Object value)
at System.Windows.Baml2006.WpfKnownMemberInvoker.SetValue(Object instance, Object value)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(XamlMember member, Object obj, Object value)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)
--- End of inner exception stack trace ---
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
at Telerik.VSX.Shell.Xaml.CommonXaml.InitializeComponent()
at Telerik.VSX.Shell.VSWindow..ctor()
at Telerik.VSX.WizardEngine.UI.WizardForm..ctor()
at Telerik.VSX.WizardEngine.UI.WizardForm.Create(String title, String titleIcon, String backgroundImage)
at Telerik.Web.UI.VSX.ProjectConfigurators.ProjectConfigurationTypeSelector.CreateWizardForm(String title, String titleIcon, String backgroundImage)
at Telerik.Web.UI.VSX.ProjectConfigurators.ProjectConfigurationTypeSelector.NewProject(ProjectKind projectKind)
at Telerik.Web.UI.VSX.ProjectConfigurators.NewProjectConfigurator.GetProjectConfigurator()
at Telerik.VSX.ProjectConfiguration.DiscontinuousProjectConfiguration.TryCollectData()
at Telerik.VSX.VSPackage.TemplateWizardBase.PrepareWizard(Object automationObject, Dictionary`2 replacementsDictionary)
at Telerik.VSX.VSPackage.TemplateWizardBase.RunStarted(Object automationObject, Dictionary`2 replacementsDictionary, WizardRunKind runKind, Object[] customParams)
at Telerik.VSX.VSPackage.TemplateEntryPointWizardBase.RunStarted(Object automationObject, Dictionary`2 replacementsDictionary, WizardRunKind runKind, Object[] customParams)
at Telerik.VSX.VSPackage.WizardBase.<>c__DisplayClass5.<Microsoft.VisualStudio.TemplateWizard.IWizard.RunStarted>b__4()
at Telerik.VSX.VSPackage.WizardBase.CatchExceptionAndSendReport(Action action)