diff --git a/src/SmallSharp.Build/MonitorActiveDocument.cs b/src/SmallSharp.Build/MonitorActiveDocument.cs
index 2dc673e..57ac744 100644
--- a/src/SmallSharp.Build/MonitorActiveDocument.cs
+++ b/src/SmallSharp.Build/MonitorActiveDocument.cs
@@ -21,19 +21,26 @@ public override bool Execute()
             if (LaunchProfiles == null || UserFile == null || FlagFile == null)
                 return true;
 
-            if (BuildEngine4.GetRegisteredTaskObject(nameof(ActiveDocumentMonitor), RegisteredTaskObjectLifetime.AppDomain) is not ActiveDocumentMonitor monitor)
+            try
             {
-                if (WindowsInterop.GetServiceProvider() is IServiceProvider services)
+                if (BuildEngine4.GetRegisteredTaskObject(nameof(ActiveDocumentMonitor), RegisteredTaskObjectLifetime.AppDomain) is not ActiveDocumentMonitor monitor)
                 {
-                    BuildEngine4.RegisterTaskObject(nameof(ActiveDocumentMonitor),
-                        new ActiveDocumentMonitor(LaunchProfiles, UserFile, FlagFile, services),
-                        RegisteredTaskObjectLifetime.AppDomain, false);
+                    if (WindowsInterop.GetServiceProvider() is IServiceProvider services)
+                    {
+                        BuildEngine4.RegisterTaskObject(nameof(ActiveDocumentMonitor),
+                            new ActiveDocumentMonitor(LaunchProfiles, UserFile, FlagFile, services),
+                            RegisteredTaskObjectLifetime.AppDomain, false);
+                    }
+                }
+                else
+                {
+                    // NOTE: this means we only support ONE project/launchProfiles per IDE.
+                    monitor.Refresh(LaunchProfiles, UserFile, FlagFile);
                 }
             }
-            else
+            catch (Exception e)
             {
-                // NOTE: this means we only support ONE project/launchProfiles per IDE.
-                monitor.Refresh(LaunchProfiles, UserFile, FlagFile);
+                Log.LogWarning($"Failed to start active document monitoring: {e}");
             }
 
             return true;
diff --git a/src/SmallSharp.Build/WindowsInterop.cs b/src/SmallSharp.Build/WindowsInterop.cs
index 147fbec..4b77cc4 100644
--- a/src/SmallSharp.Build/WindowsInterop.cs
+++ b/src/SmallSharp.Build/WindowsInterop.cs
@@ -29,7 +29,7 @@ public static void EnsureOpened(string filePath, TimeSpan delay = default)
 
                 dte.ExecuteCommand("File.OpenFile", filePath);
             }
-            catch 
+            catch
             {
                 Debug.Fail($"Failed to open {filePath}.");
             }
@@ -43,11 +43,20 @@ public static void EnsureOpened(string filePath, TimeSpan delay = default)
             if (delay != default)
                 Thread.Sleep(delay);
 
-            var dte = GetDTE();
-            if (dte == null)
-                return null;
+            try
+            {
 
-            return new OleServiceProvider(dte);
+                var dte = GetDTE();
+                if (dte == null)
+                    return null;
+
+                return new OleServiceProvider(dte);
+            }
+            catch
+            {
+                Debug.Fail("Failed to get IDE service provider.");
+                return null;
+            }
         }
 
         static EnvDTE.DTE? GetDTE()