--- a/SourceCodeManagerUtilitiesForContainerBasedManagers.st	Fri Apr 15 01:50:52 2016 +0200
+++ b/SourceCodeManagerUtilitiesForContainerBasedManagers.st	Sun Apr 17 15:38:49 2016 +0200
@@ -128,15 +128,17 @@
     ].
 
     defClass instAndClassMethodsDo:[:m | m package:defClass package].
-
-    self
-        checkinClasses:(Array with:defClass)
-        withInfo:checkinInfo
-        withCheck:false.
-
-
-    self activityNotification:nil.
-
+    [
+        self
+            checkinClasses:(Array with:defClass)
+            withInfo:checkinInfo
+            withCheck:false
+            usingManager:nil
+            confirmNewContainer:false.
+    ] ifCurtailed:[
+        self activityNotification:'Checkin of build-support files aborted - see Transcript'.
+    ].
+    
     anyFailure ifTrue:[
         self warn:'Checkin failed - see Transcript.'.
         self activityNotification:'Checkin of build-support files failed - see Transcript.'.