--- a/EditTextViewCompletionSupport.st	Mon Nov 07 15:34:56 2016 +0100
+++ b/EditTextViewCompletionSupport.st	Tue Nov 08 17:33:12 2016 +0100
@@ -245,8 +245,14 @@
             "/ protect end-user applications from errors
             Error handle:[:ex |
                 Smalltalk isSmalltalkDevelopmentSystem ifTrue:[ ex reject ]
-            ] do:[    
-                self computeCompletions.
+            ] do:[ 
+                (editView topView isKindOf:DebugView) ifTrue:[
+                    ControlInterrupt ignoreIn:[
+                        self computeCompletions.
+                    ].    
+                ] ifFalse:[    
+                    self computeCompletions.
+                ].
             ].
         ] forkAt:(Processor activePriority - 1).