Properly handle invalid links

weblate/trans/models.py

@@ -552,6 +552,7 @@ class SubProject(models.Model):
         Then it checks them for validity.
         '''
         self.sync_git_repo(True)
+        try:
             matches = self.get_mask_matches()
             if len(matches) == 0:
                 raise ValidationError(_('The mask did not match any files!'))
@@ -586,6 +587,9 @@ class SubProject(models.Model):
                     raise ValidationError(_('Format of translation template could not be recognized.'))
                 except Exception, e:
                     raise ValidationError(_('Failed to parse translation template.'))
+        except SubProject.DoesNotExist:
+            # Happens with invalid link
+            pass
 
     def save(self, *args, **kwargs):
         '''