diff --git a/source/Cosmos.VS.ProjectSystem/CompatMocks/ConfiguredProjectMock.cs b/source/Cosmos.VS.ProjectSystem/CompatMocks/ConfiguredProjectMock.cs
new file mode 100644
index 000000000..95b601480
--- /dev/null
+++ b/source/Cosmos.VS.ProjectSystem/CompatMocks/ConfiguredProjectMock.cs
@@ -0,0 +1,17 @@
+using System.ComponentModel.Composition;
+using Microsoft.VisualStudio.ProjectSystem;
+
+namespace Cosmos.VS.ProjectSystem.CompatMocks
+{
+    [Export]
+    internal sealed class ConfiguredProjectMock
+    {
+        [ImportingConstructor]
+        public ConfiguredProjectMock(ConfiguredProjectServicesMock configuredProjectServicesMock)
+        {
+            Services = configuredProjectServicesMock;
+        }
+        
+        public ConfiguredProjectServicesMock Services { get; }
+    }
+}
diff --git a/source/Cosmos.VS.ProjectSystem/CompatMocks/ConfiguredProjectServicesMock.cs b/source/Cosmos.VS.ProjectSystem/CompatMocks/ConfiguredProjectServicesMock.cs
new file mode 100644
index 000000000..ff5c83518
--- /dev/null
+++ b/source/Cosmos.VS.ProjectSystem/CompatMocks/ConfiguredProjectServicesMock.cs
@@ -0,0 +1,24 @@
+using System.ComponentModel.Composition;
+using Microsoft.VisualStudio.Composition;
+using Microsoft.VisualStudio.ProjectSystem;
+using Microsoft.VisualStudio.ProjectSystem.Properties;
+
+namespace Cosmos.VS.ProjectSystem.CompatMocks
+{
+    [Export]
+    internal sealed class ConfiguredProjectServicesMock
+    {
+        [ImportingConstructor]
+        public ConfiguredProjectServicesMock(
+            IAdditionalRuleDefinitionsService additionalRuleDefinitions,
+            IPropertyPagesCatalogProvider propertyPagesCatalog)
+        {
+            AdditionalRuleDefinitions = additionalRuleDefinitions;
+            PropertyPagesCatalog = propertyPagesCatalog;
+        }
+
+        public IAdditionalRuleDefinitionsService AdditionalRuleDefinitions { get; }
+
+        public IPropertyPagesCatalogProvider PropertyPagesCatalog { get; }
+    }
+}
diff --git a/source/Cosmos.VS.ProjectSystem/Cosmos.VS.ProjectSystem.csproj b/source/Cosmos.VS.ProjectSystem/Cosmos.VS.ProjectSystem.csproj
index 642af86e5..40533633b 100644
--- a/source/Cosmos.VS.ProjectSystem/Cosmos.VS.ProjectSystem.csproj
+++ b/source/Cosmos.VS.ProjectSystem/Cosmos.VS.ProjectSystem.csproj
@@ -37,6 +37,7 @@
         <XamlPropertyRule Include="BuildSystem\Rules\LaunchConfiguration.xaml" />
         <XamlPropertyRule Include="BuildSystem\Rules\PackageReference.xaml" />
         <XamlPropertyRule Include="BuildSystem\Rules\ResolvedPackageReference.xaml" />
+        <XamlPropertyRule Update="@(XamlPropertyRule)" ConfiguredProjectTypeName="Cosmos.VS.ProjectSystem.CompatMocks.ConfiguredProjectMock" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/source/Cosmos.VS.ProjectSystem/ProjectProperties.cs b/source/Cosmos.VS.ProjectSystem/ProjectProperties.cs
index f6d383409..c1d2dc4f6 100644
--- a/source/Cosmos.VS.ProjectSystem/ProjectProperties.cs
+++ b/source/Cosmos.VS.ProjectSystem/ProjectProperties.cs
@@ -1,19 +1,25 @@
 using System.Composition;
+using Microsoft.VisualStudio.Composition;
 using Microsoft.VisualStudio.ProjectSystem;
 using Microsoft.VisualStudio.ProjectSystem.Properties;
 
+using Cosmos.VS.ProjectSystem.CompatMocks;
+
 namespace Cosmos.VS.ProjectSystem
 {
     [Export]
     internal partial class ProjectProperties : StronglyTypedPropertyAccess
     {
+        public new ConfiguredProjectMock ConfiguredProject { get; }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="ProjectProperties"/> class.
         /// </summary>
         [ImportingConstructor]
-        public ProjectProperties(ConfiguredProject configuredProject)
+        public ProjectProperties(ConfiguredProject configuredProject, ConfiguredProjectMock configuredProjectMock)
             : base(configuredProject)
         {
+            ConfiguredProject = configuredProjectMock;
         }
 
         /// <summary>
diff --git a/source/Cosmos.VS.ProjectSystem/ProjectSystem/VS/Debug/DebugLaunchProvider.cs b/source/Cosmos.VS.ProjectSystem/ProjectSystem/VS/Debug/DebugLaunchProvider.cs
index ac99b7c24..59474dcbc 100644
--- a/source/Cosmos.VS.ProjectSystem/ProjectSystem/VS/Debug/DebugLaunchProvider.cs
+++ b/source/Cosmos.VS.ProjectSystem/ProjectSystem/VS/Debug/DebugLaunchProvider.cs
@@ -22,18 +22,23 @@ namespace Cosmos.VS.ProjectSystem.VS.Debug
     {
         private static readonly Guid CosmosDebugEngineGuid = new Guid("fa1da3a6-66ff-4c65-b077-e65f7164ef83");
 
-        private ProjectProperties _projectProperties;
-        private IBootableProperties _bootableProperties;
+        private readonly ProjectProperties _projectProperties;
+        private readonly IBootableProperties _bootableProperties;
+
+        private readonly IProjectLockService _projectLockService;
 
         [ImportingConstructor]
         public DebugLaunchProvider(
             ConfiguredProject configuredProject,
             ProjectProperties projectProperties,
-            IBootableProperties bootableProperties)
+            IBootableProperties bootableProperties,
+            IProjectLockService projectLockService)
             : base(configuredProject)
         {
             _projectProperties = projectProperties;
             _bootableProperties = bootableProperties;
+
+            _projectLockService = projectLockService;
         }
 
         public override Task<bool> CanLaunchAsync(DebugLaunchOptions aLaunchOptions) => TplExtensions.TrueTask;
@@ -110,9 +115,7 @@ namespace Cosmos.VS.ProjectSystem.VS.Debug
         
         private async Task<string> GetPropertyAsync(string propertyName)
         {
-            var projectLockService = ConfiguredProject.UnconfiguredProject.ProjectService.Services.ProjectLockService;
-
-            using (var projectReadLock = await projectLockService.ReadLockAsync())
+            using (var projectReadLock = await _projectLockService.ReadLockAsync())
             {
                 var project = await projectReadLock.GetProjectAsync(ConfiguredProject);
                 return project.GetPropertyValue(propertyName);
diff --git a/source/Cosmos.VS.ProjectSystem/ProjectSystem/VS/PlugsProjectTreeProvider.cs b/source/Cosmos.VS.ProjectSystem/ProjectSystem/VS/PlugsProjectTreeProvider.cs
index a329aab60..7a9186336 100644
--- a/source/Cosmos.VS.ProjectSystem/ProjectSystem/VS/PlugsProjectTreeProvider.cs
+++ b/source/Cosmos.VS.ProjectSystem/ProjectSystem/VS/PlugsProjectTreeProvider.cs
@@ -17,14 +17,18 @@ namespace Cosmos.VS.ProjectSystem.VS
         private static readonly ProjectTreeFlags PlugsProjectTreeFlags = ProjectTreeFlags.Create(
             ProjectTreeFlags.Common.BubbleUp | ProjectTreeFlags.Common.VirtualFolder);
 
+        private readonly IActiveConfiguredProjectSubscriptionService _activeConfiguredProjectSubscriptionService;
+
         private IDisposable _itemsSubscriptionLink;
 
         [ImportingConstructor]
         protected PlugsProjectTreeProvider(
             IProjectThreadingService threadingService,
-            UnconfiguredProject unconfiguredProject)
+            UnconfiguredProject unconfiguredProject,
+            IActiveConfiguredProjectSubscriptionService activeConfiguredProjectSubscriptionService)
             : base(threadingService, unconfiguredProject)
         {
+            _activeConfiguredProjectSubscriptionService = activeConfiguredProjectSubscriptionService;
         }
 
         protected override void Initialize()
@@ -37,8 +41,7 @@ namespace Cosmos.VS.ProjectSystem.VS
                     return Task.FromResult(new TreeUpdateResult(CreatePlugsFolder(), true));
                 });
 
-            var subscriptionService = UnconfiguredProject.Services.ActiveConfiguredProjectSubscription;
-            var itemsBlock = subscriptionService.ProjectCatalogSource.SourceBlock;
+            var itemsBlock = _activeConfiguredProjectSubscriptionService.ProjectCatalogSource.SourceBlock;
             var targetBlock = new ActionBlock<IProjectVersionedValue<IProjectCatalogSnapshot>>(ItemsChangedAsync);
 
             _itemsSubscriptionLink = itemsBlock.LinkTo(
@@ -95,7 +98,7 @@ namespace Cosmos.VS.ProjectSystem.VS
         {
             var tree = oldTree.ClearChildren();
 
-            foreach (var reference in snapshot.Project.Value.GetItems("PlugsReference"))
+            foreach (var reference in snapshot.Project.ProjectInstance.GetItems("PlugsReference"))
             {
                 if (cancellationToken.IsCancellationRequested)
                 {