gistfile1.txt

System.ArgumentNullException: Value cannot be null.
Parameter name: path1
   at System.IO.Path.Combine(String path1, String path2, String path3)
   at Xamarin.AndroidTools.AndroidSdk.GetPlatformDirectory(Int32 apiLevel)
   at Xamarin.AndroidTools.AndroidSdk.IsPlatformInstalled(Int32 apiLevel)
   at MonoDevelop.MonoDroid.MonoDroidFramework.IsPlatformInstalled(TargetRuntime runtime, TargetFramework framework)
   at MonoDevelop.MonoDroid.MonoDroidFramework.<>c__DisplayClass6.<GetLatestInstalledFramework>b__5(TargetFramework fx)
   at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
   at MonoDevelop.MonoDroid.MonoDroidFramework.GetLatestInstalledFramework(TargetRuntime runtime)
   at MonoDevelop.MonoDroid.MonoDroidProject.OnModified(SolutionItemModifiedEventArgs args)
   at MonoDevelop.Projects.SolutionItem.NotifyModified(String hint)
   at MonoDevelop.MonoDroid.MonoDroidProject.set_AndroidUseLatestPlatformSdk(Nullable`1 value)
   at MonoDevelop.MonoDroid.MonoDroidProject..ctor(String languageName, ProjectCreateInformation info, XmlElement projectOptions)
   at MonoDevelop.MonoDroid.MonoDroidProjectBinding.CreateProject(ProjectCreateInformation info, XmlElement projectOptions)
   at MonoDevelop.Projects.ProjectService.CreateProject(String type, ProjectCreateInformation info, XmlElement projectOptions)
   at MonoDevelop.Ide.Templates.ProjectDescriptor.CreateItem(ProjectCreateInformation projectCreateInformation, String defaultLanguage)
   at MonoDevelop.Ide.Templates.SolutionDescriptor.CreateEntry(ProjectCreateInformation projectCreateInformation, String defaultLanguage)
   at MonoDevelop.Ide.Templates.ProjectTemplate.CreateWorkspaceItem(ProjectCreateInformation cInfo)
   at MonoDevelop.Ide.Projects.NewProjectDialog.CreateProject()