Ensure the executable exists before trying to run it

MPF.Library/Data/BaseParameters.cs

@@ -164,11 +164,28 @@ namespace MPF.Data
         /// <param name="drive">Drive representing the disc to get information from</param>
         public abstract void GenerateSubmissionInfo(SubmissionInfo submissionInfo, string basePath, Drive drive);
 
+        /// <summary>
+        /// Returns if the related executable exists in the configured path or not
+        /// </summary>
+        /// <returns>True if the executable exists, false otherwise</returns>
+        public bool InternalProgramExists()
+        {
+            // Missing path information means we can't invoke anyway
+            if (string.IsNullOrWhiteSpace(ExecutablePath))
+                return false;
+
+            return File.Exists(ExecutablePath);
+        }
+
         /// <summary>
         /// Run internal program
         /// </summary>
         public void ExecuteInternalProgram()
         {
+            // Invalid path means we shouldn't try to invoke
+            if (!InternalProgramExists())
+                return;
+
             process = new Process()
             {
                 StartInfo = new ProcessStartInfo()

MPF.Library/Utilities/DumpEnvironment.cs

@@ -475,6 +475,13 @@ namespace MPF.Utilities
                 if (!result)
                     return result;
 
+                // Check that the internal tool exists
+                if (!Parameters.InternalProgramExists())
+                {
+                    progress?.Report(Result.Success($"Could not find executable for {this.InternalProgram}!"));
+                    return Result.Failure($"Could not find executable for {this.InternalProgram}!");
+                }
+
                 // Execute internal tool
                 progress?.Report(Result.Success($"Executing {this.InternalProgram}... please wait!"));
                 Directory.CreateDirectory(OutputDirectory);

MPF/Windows/MainWindow.xaml.cs

@@ -646,6 +646,13 @@ namespace MPF.Windows
                         ShowDiscInformationWindow
                     );
                 }
+                else
+                {
+                    ViewModels.LoggerViewModel.VerboseLogLn(result.Message);
+                    StatusLabel.Content = "Execution failed!";
+                    StartStopButton.Content = Interface.StartDumping;
+                    CopyProtectScanButton.IsEnabled = true;
+                }
             }
             catch
             {