diff -r 35046bc74554 -r fb9799a0c0f7 controls/DebugVariablePanel/DebugVariableTextViewer.py
--- a/controls/DebugVariablePanel/DebugVariableTextViewer.py	Fri May 31 14:22:15 2013 +0200
+++ b/controls/DebugVariablePanel/DebugVariableTextViewer.py	Fri May 31 18:32:51 2013 +0200
@@ -84,7 +84,7 @@
         try:
             values = eval(data)
             if not isinstance(values, TupleType):
-                raise
+                raise ValueError
         except:
             message = _("Invalid value \"%s\" for debug variable") % data
             values = None