Notice: Undefined index: storage in customfilter_export_form() (line 662 of /var/www/sites/all/modules/customfilter.module).

thanks i just ran into this issue myself -- the above patch fixes it for me. can somebody roll that into the next release? this is almost year old!

+++ Q:/drupal7/modules/customfilter/customfilter.module	Thu Sep 29 16:29:36 2011
@@ -609,6 +609,8 @@
+  } else {

else { should be on a separate line.

Other than that, why is form_state['storage'] being assigned from/to a session variable at all? That doens't seem necessary. But maybe that's for another issue.

commit your patch at 7f8468f.
Thanks.

The author of this module looks not active for a long time and he just add me as co-maintainer of this module.

I would solve the issue list of this module once I have time.

let's close this currently.