gistfile1.txt

System.ArgumentNullException: Value cannot be null.
Parameter name: key
   at System.Runtime.Remoting.Activation.ActivationServices.Activate(RemotingProxy remProxy, IConstructionCallMessage ctorMsg)
   at System.Runtime.Remoting.Proxies.RemotingProxy.InternalActivate(IConstructionCallMessage ctorMsg)
   at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(IMessage reqMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Xamarin.Ide.Addons.AddonReferencingProjectAdaptor..ctor(DotNetProject project)
   at MonoDevelop.MonoDroid.MonoDroidProject.OnEndLoad()
   at MonoDevelop.Projects.SolutionItem.MonoDevelop.Projects.ILoadController.EndLoad()
   at MonoDevelop.Projects.Extensions.LoadOperation.End()
   at MonoDevelop.Projects.Extensions.ProjectExtensionUtil.EndLoadOperation()
   at MonoDevelop.Projects.Formats.MSBuild.MSBuildProjectHandler.Load(IProgressMonitor monitor, String fileName, MSBuildFileFormat expectedFormat, String language, Type itemClass)
   at MonoDevelop.Projects.Extensions.DotNetProjectNode.LoadSolutionItem(IProgressMonitor monitor, String fileName, MSBuildFileFormat expectedFormat, String itemGuid)
   at MonoDevelop.Projects.Formats.MSBuild.MSBuildProjectService.LoadItem(IProgressMonitor monitor, String fileName, MSBuildFileFormat expectedFormat, String typeGuid, String itemGuid)
   at MonoDevelop.Projects.Formats.MSBuild.MSBuildFileFormat.ReadFile(FilePath file, Type expectedType, IProgressMonitor monitor)
   at MonoDevelop.Projects.ProjectService.ReadFile(IProgressMonitor monitor, String file, Type expectedType, FileFormat& format)
   at MonoDevelop.Projects.ProjectService.<>c__DisplayClass2.<ReadSolutionItem>b__0(IProgressMonitor , String )
   at MonoDevelop.Projects.DefaultProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName)
   at MonoDevelop.Projects.CompiledAssemblyExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName)
   at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem(IProgressMonitor monitor, String fileName, ItemLoadCallback callback)
   at MonoDevelop.Projects.ProjectService.ReadSolutionItem(IProgressMonitor monitor, String file)
   at MonoDevelop.Projects.SolutionFolder.AddItem(IProgressMonitor monitor, String filename, Boolean createSolutionConfigurations)
   at MonoDevelop.Ide.ProjectOperations.AddSolutionItem(SolutionFolder folder, String entryFileName)
   at MonoDevelop.Ide.ProjectOperations.AddSolutionItem(SolutionFolder parentFolder)