diff --git a/CommonHelpers/Instance.cs b/CommonHelpers/Instance.cs
index 0d32d72..63372a2 100644
--- a/CommonHelpers/Instance.cs
+++ b/CommonHelpers/Instance.cs
@@ -155,7 +155,7 @@ namespace CommonHelpers
             {
                 if (!runOnceMutex.WaitOne(runOnceTimeout))
                 {
-                    Fatal(title, "Run many times");
+                    Fatal(title, "Run many times", false);
                 }
             }
             catch (AbandonedMutexException)
@@ -249,8 +249,10 @@ namespace CommonHelpers
             catch { }
         }
 
-        public static void Fatal(String? title, String message)
+        public static void Fatal(String? title, String message, bool capture = true)
         {
+            if (capture)
+                Log.TraceError("FATAL: {0}", message);
             if (title is not null)
                 MessageBox.Show(message, title, MessageBoxButtons.OK, MessageBoxIcon.Error);
             Environment.Exit(1);
diff --git a/CommonHelpers/Log.cs b/CommonHelpers/Log.cs
index 2bb8811..48723c2 100644
--- a/CommonHelpers/Log.cs
+++ b/CommonHelpers/Log.cs
@@ -47,6 +47,16 @@ namespace CommonHelpers
                 Console.WriteLine(line);
         }
 
+        public static void TraceError(string format, params object?[] arg)
+        {
+            String line = string.Format(format, arg);
+            Sentry.SentrySdk.CaptureMessage(line, Sentry.SentryLevel.Error);
+            if (LogToTrace)
+                Trace.WriteLine(line);
+            if (LogToConsole)
+                Console.WriteLine(line);
+        }
+
         public static void TraceException(String type, Object? name, Exception e)
         {
             TraceLine("{0}: {1}: Exception: {2}", type, name, e);