Command-not-found crash in Ubuntu 12.04 beta 2

peter@shuttle:~$ a��
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:

command-not-found version: 0.2.44 - Actually:

$ apt-show-versions command-not-found
command-not-found/precise uptodate 0.2.46ubuntu5

How I encountered this command-not-found problem:

I am running Ubuntu 12.04 beta 2 updated through this afternoon. I have reported bugs #929054 and #980134 regarding keyboard behavior (under gnome-terminal and the Xubuntu equivalent) when the Maori layout is included in the keyboard switcher list. Trying to type a combination with AltGr (right Alt) with any keyboard with AltGr combos results in the � character being displayed. For example, I also have the Spanish (ES) layout in the list. This error will then occur if I select Maori or ES, and try to enter a character which requires the AltGr key to be depressed.

If such an error output occurs, when I type the Enter key, command-not-found will crash.

This (the display of the � character) happens under Xubuntu 12.04 as well as Ubuntu 12.04. It did not happen with some earlier versions of Ubuntu. It does not happen with Version 6 of Debian, using gnome-terminal.

Ubuntu version and kernel version
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu precise (development branch)"
Linux shuttle 3.2.0-23-generic #36-Ubuntu SMP Tue Apr 10 20:41:14 UTC 2012 i686 athlon i386 GNU/Linux
model name : AMD Athlon(tm) XP 2500+
cpu MHz : 1825.915

This bug *may* have been fixed upstream, but it isn't in the current Ubuntu updates.