added an exception

diff --git a/helm/software/matita/matitaExcPp.ml b/helm/software/matita/matitaExcPp.ml
index 13eeaafeda9e937ca5c2b5fc1d6cb287a9ee2311..741bffae637f84e97a096cfbd219f074974fc2e8 100644 (file)
--- a/helm/software/matita/matitaExcPp.ml
+++ b/helm/software/matita/matitaExcPp.ml
@@ -142,6 +142,8 @@ let rec to_string =
      None, "Refiner error: " ^ Lazy.force msg
   | NCicRefiner.RefineFailure msg ->
      None, "NRefiner failure: " ^ snd (Lazy.force msg)
+  | NCicTypeChecker.TypeCheckerFailure msg ->
+     None, "NTypeChecker failure: " ^ Lazy.force msg
   | NCicRefiner.AssertFailure msg ->
      None, "NRefiner assert failure: " ^ Lazy.force msg
   | NCicEnvironment.BadDependency msg ->