=== modified file 'GTG/gtk/browser/browser.py'
--- GTG/gtk/browser/browser.py	2010-06-17 08:58:32 +0000
+++ GTG/gtk/browser/browser.py	2010-06-28 18:26:46 +0000
@@ -1102,6 +1102,8 @@
         if not tid:
             #tid_to_delete is a [project,task] tuple
             tids_todelete = self.get_selected_tasks()
+            if not tids_todelete:
+                return
         else:
             tids_todelete = [tid]
         Log.debug("going to delete %s" % tids_todelete)
@@ -1385,7 +1387,7 @@
             selection = tview.get_selection()
         # Get the selection iter
         if selection.count_selected_rows() <= 0:
-            ids = [None]
+            ids = []
         else:
             model, paths = selection.get_selected_rows()
             iters = [model.get_iter(path) for path in paths]