usb_test crashed with IOError in MD5HashFile(): [Errno 2] No such file or directory: '/cdrom/tmp0mto2z'

[AJenbo]

Booted my usb on another pc, last one didn't shot down propperly and had to kill the power

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: checkbox 0.12.8
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
CasperVersion: 1.287
CheckboxSubmission: a4d458eeb1a8235a1d70f57cfd03ec30
CheckboxSystem: 669b662da410063cc918e0f60cf6cddf
Date: Mon Oct 17 22:59:40 2011
ExecutablePath: /usr/share/checkbox/scripts/usb_test
InterpreterPath: /usr/bin/python2.7
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcCmdline: /usr/bin/python /usr/share/checkbox/scripts/usb_test -t
ProcEnviron:
 PATH=(custom, no user)
 LANG=da_DK.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/checkbox/scripts/usb_test', '-t']
SourcePackage: checkbox
Title: usb_test crashed with IOError in MD5HashFile(): [Errno 2] No such file or directory: '/cdrom/tmp0mto2z'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Rigved Rakshit (rigved)]

Got this problem when running checkbox. Otherwise, the USB device works fine.

Description: Ubuntu precise (development branch)
Release: 12.04

checkbox:
  Installed: 0.13
  Candidate: 0.13
  Version table:
 *** 0.13 0
        500 http://in.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
        100 /var/lib/dpkg/status

[Daniel Manrique (roadmr)]

Were you running checkbox from a bootable USB key?

I marked as medium because I suspect this error happens when you try to run from a USB key (notice how the mount directory is /cdrom/ for a USB device, that's what makes me think so). This would affect enough people potentially to call it medium importance.

[Adam Niedling (krychek)]

Daniel: The same issue happened to me too (bug #883488) and I wasn't running it from a USB key.

[Daniel Manrique (roadmr)]

OK, I'd like confirmation from AJenbo on the following:

1- were you running from a USB bootable stick, or from a hard-disk installation of Ubuntu?

2- What happens if you insert the same USB thumb drive that failed and run this on a terminal:
/usr/share/checkbox/scripts/usb_test -t

3- Could you insert the USB stick and post the output of running this on a terminal:
mount

Thanks!