diff --git a/MLS.Agent.Tests/CommandLine/VerifyCommandTests.cs b/MLS.Agent.Tests/CommandLine/VerifyCommandTests.cs
index b41e5860e..384f7d966 100644
--- a/MLS.Agent.Tests/CommandLine/VerifyCommandTests.cs
+++ b/MLS.Agent.Tests/CommandLine/VerifyCommandTests.cs
@@ -805,6 +805,37 @@ DOES NOT COMPILE
                 resultCode.Should().NotBe(0);
             }
 
+            [Fact]
+            public async Task When_markdown_has_Program_with_a_region_and_markdown_has_destination_file_then_validation_succeeds()
+            {
+                var root = Create.EmptyWorkspace(isRebuildablePackage: true).Directory;
+
+                var directoryAccessor = new InMemoryDirectoryAccessor(root, root)
+            {
+                ("./subFolder/some.csproj", CsprojContents),
+                ("Program.cs", CompilingProgramWithRegionCs),
+                ("doc.md", $@"
+```cs --destination-file Program.cs --region targetRegion
+Console.WriteLine(""This code should be compiled with the targetRegion in Program.cs"");
+```
+")
+            }.CreateFiles();
+
+                var console = new TestConsole();
+                var project = directoryAccessor.GetFullyQualifiedPath(new RelativeFilePath("./subFolder/some.csproj"));
+
+                var resultCode = await VerifyCommand.Do(
+                    new VerifyOptions(root),
+                    console,
+                    () => directoryAccessor,
+                    PackageRegistry.CreateForTryMode(root),
+                    new StartupOptions(package: project.FullName)
+                    );
+
+                _output.WriteLine(console.Out.ToString());
+
+                resultCode.Should().Be(0);
+            }
         }
 
     }
diff --git a/MLS.Agent.Tests/LocalToolPackageDiscoveryStrategyTests.cs b/MLS.Agent.Tests/LocalToolPackageDiscoveryStrategyTests.cs
index c3e77232e..89d22d204 100644
--- a/MLS.Agent.Tests/LocalToolPackageDiscoveryStrategyTests.cs
+++ b/MLS.Agent.Tests/LocalToolPackageDiscoveryStrategyTests.cs
@@ -10,6 +10,8 @@
 using Xunit;
 using Xunit.Abstractions;
 using WorkspaceServer;
+using System.IO;
+using System.Linq;
 
 namespace MLS.Agent.Tests
 {
@@ -29,14 +31,15 @@ public async Task Discover_tool_from_directory()
             {
                 var console = new TestConsole();
                 var temp = directory.Directory;
-                var asset = (await Create.ConsoleWorkspaceCopy()).Directory;
-                await PackCommand.Do(new PackOptions(asset, outputDirectory: temp, enableWasm: false), console);
-                var result = await Tools.CommandLine.Execute("dotnet", $"tool install --add-source {temp.FullName} console --tool-path {temp.FullName}");
+                var package = await Create.ConsoleWorkspaceCopy();
+                File.Move(package.Directory.GetFiles("*.csproj").First().FullName, Path.Combine(package.Directory.FullName, "not-console.csproj"));
+                await PackCommand.Do(new PackOptions(package.Directory, outputDirectory: temp, enableWasm: false), console);
+                var result = await Tools.CommandLine.Execute("dotnet", $"tool install --add-source {temp.FullName} not-console --tool-path {temp.FullName}");
                 output.WriteLine(string.Join("\n", result.Error));
                 result.ExitCode.Should().Be(0);
 
                 var strategy = new LocalToolInstallingPackageDiscoveryStrategy(temp);
-                var tool = await strategy.Locate(new PackageDescriptor("console"));
+                var tool = await strategy.Locate(new PackageDescriptor("not-console"));
                 tool.Should().NotBeNull();
             }
         }
diff --git a/MLS.Agent/Markdown/AnnotatedCodeBlockExtensions.cs b/MLS.Agent/Markdown/AnnotatedCodeBlockExtensions.cs
index 0a6293e4b..beecc33d8 100644
--- a/MLS.Agent/Markdown/AnnotatedCodeBlockExtensions.cs
+++ b/MLS.Agent/Markdown/AnnotatedCodeBlockExtensions.cs
@@ -16,7 +16,8 @@ public static Buffer GetBufferAsync(
         {
             if (block.Annotations is LocalCodeBlockAnnotations localOptions)
             {
-                var absolutePath = directoryAccessor.GetFullyQualifiedPath(localOptions.SourceFile).FullName;
+                var file = localOptions.SourceFile ?? localOptions.DestinationFile;
+                var absolutePath = directoryAccessor.GetFullyQualifiedPath(file).FullName;
                 var bufferId = new BufferId(absolutePath, block.Annotations.Region);
                 return new Buffer(bufferId, block.SourceCode);
             }
diff --git a/WorkspaceServer.Tests/AspNetWorkspaceTests.cs b/WorkspaceServer.Tests/AspNetWorkspaceTests.cs
index 5081e6a68..758020b05 100644
--- a/WorkspaceServer.Tests/AspNetWorkspaceTests.cs
+++ b/WorkspaceServer.Tests/AspNetWorkspaceTests.cs
@@ -38,7 +38,8 @@ public async Task Run_starts_the_kestrel_server_and_provides_a_WebServer_feature
         {
             var registry = Default.PackageFinder;
             var server = new RoslynWorkspaceServer(registry);
-            var package = await registry.Get<IHaveADirectory>("aspnet.webapi");
+            var package = await registry.Get<Package>("aspnet.webapi");
+            await package.CreateRoslynWorkspaceAsync(new Budget()); // ensure the package exists on disk
 
             var workspace = WorkspaceFactory.CreateWorkspaceFromDirectory(package.Directory, "aspnet.webapi");
 
diff --git a/WorkspaceServer.Tests/RoslynWorkspaceServerConsoleProjectTests.cs b/WorkspaceServer.Tests/RoslynWorkspaceServerConsoleProjectTests.cs
index f8dc8d2ff..d42645610 100644
Binary files a/WorkspaceServer.Tests/RoslynWorkspaceServerConsoleProjectTests.cs and b/WorkspaceServer.Tests/RoslynWorkspaceServerConsoleProjectTests.cs differ