Xamarin studio Loading solution problem

I get this error when loading the project or trying to click at any menu options.

System.TypeInitializationException: An exception was thrown by the type initializer for MonoDevelop.Projects.Policies.PolicyService ---> System.NullReferenceException: Object reference not set to an instance of an object
at MonoDevelop.Projects.Policies.PolicyService..cctor () [0x0008d] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Policies/PolicyService.cs:69
--- End of inner exception stack trace ---
at MonoDevelop.Projects.Policies.PolicyContainer.GetDefaultPolicy[DotNetNamingPolicy] () [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Policies/PolicyContainer.cs:367
at MonoDevelop.Projects.Policies.PolicyContainer.Get[DotNetNamingPolicy] () [0x0004c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Policies/PolicyContainer.cs:65
at MonoDevelop.Projects.DotNetProject.get_ResourceHandler () [0x0000b] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/DotNetProject.cs:268
at MonoDevelop.Projects.DotNetProject.SetItemHandler (ISolutionItemHandler handler) [0x00013] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/DotNetProject.cs:1011
at MonoDevelop.Projects.Formats.MSBuild.MSBuildProjectHandler.Load (IProgressMonitor monitor, MonoDevelop.Projects.Formats.MSBuild.MSBuildProject msproject) [0x00045] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Formats.MSBuild/MSBuildProjectHandler.cs:531
at MonoDevelop.Projects.Formats.MSBuild.MSBuildProjectHandler.Load (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Formats.MSBuild.MSBuildFileFormat expectedFormat, System.String language, System.Type itemClass) [0x001eb] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Formats.MSBuild/MSBuildProjectHandler.cs:329
at MonoDevelop.Projects.Extensions.DotNetProjectNode.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Formats.MSBuild.MSBuildFileFormat expectedFormat, System.String itemGuid) [0x00016] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Extensions/DotNetProjectNode.cs:66
at MonoDevelop.Projects.Formats.MSBuild.MSBuildProjectService.LoadItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Formats.MSBuild.MSBuildFileFormat expectedFormat, System.String typeGuid, System.String itemGuid) [0x00024] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Formats.MSBuild/MSBuildProjectService.cs:90
at MonoDevelop.Projects.Formats.MSBuild.SlnFileFormat+c__AnonStorey73.<>m__4D (IProgressMonitor , System.String ) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Formats.MSBuild/SlnFileFormat.cs:755
at MonoDevelop.Projects.DefaultProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectService.cs:672
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Autotools.MakefileProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/addins/MonoDevelop.Autotools/MakefileProjectServiceExtension.cs:69
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.CompiledAssemblyExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x0003e] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/CompiledAssemblyProject.cs:224
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName) [0x00000] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:103
at MonoDevelop.Projects.ProjectServiceExtension.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x0000c] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects/ProjectServiceExtension.cs:94
at MonoDevelop.Projects.Extensions.ProjectExtensionUtil.LoadSolutionItem (IProgressMonitor monitor, System.String fileName, MonoDevelop.Projects.Extensions.ItemLoadCallback callback) [0x00016] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Extensions/ProjectExtensionUtil.cs:59
at MonoDevelop.Projects.Formats.MSBuild.SlnFileFormat.LoadSolution (MonoDevelop.Projects.Solution sol, System.String fileName, MonoDevelop.Projects.Formats.MSBuild.MSBuildFileFormat format, IProgressMonitor monitor) [0x004cb] in /Users/builder/data/lanes/monodevelop_private-lion-bigsplash/a8219130/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Projects.Formats.MSBuild/SlnFileFormat.cs:754

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