Module Permission Form throws notice and doesn't have the guest name

What steps will reproduce the problem?
1. Install a module.
2. Get redirected to the module permissions page

What is the expected output? What do you see instead?

Should be error free with all field sets labelled. Instead the Guest field is 
missing and a notice appears.

This is most likely related to stripping out "system" permission groups, as 
Guest happens to be one.

Please use labels and text to provide additional information.

Error:

( ! ) Notice: Undefined variable: guestGroup in 
./modules/Mortar/actions/ModulePermissions.class.php on line 65

Original issue reported on code.google.com by tedivm@tedivm.com on 10 Jan 2010 at 8:29

tedivm / mortar

Module Permission Form throws notice and doesn't have the guest name #72